spin_unlock_irq+0x23/0x50 ** 12 printk messages dropped ** [ 581.719005][ T6339] Bluetooth: hci6: failed to register connection device [ 581.724022][T13267] CPU: 0 UID: 0 PID: 13267 Comm: kworker/u9:12 Not tainted syzkaller #0 PREEMPT(full) [ 581.724047][T13267] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 [ 581.724060][T13267] Workqueue: hci4 hci_rx_work [ 581.724087][T13267] Call Trace: [ 581.724095][T13267] [ 581.724104][T13267] dump_stack_lvl+0x189/0x250 [ 581.724126][T13267] ? __pfx_dump_stack_lvl+0x10/0x10 [ 581.724144][T13267] ? __pfx__printk+0x10/0x10 [ 581.724174][T13267] ? kernfs_path_from_node+0x250/0x290 [ 581.724198][T13267] ? kernfs_path_from_node+0x2f/0x290 ** 45 printk messages dropped ** [ 581.793464][ T6339] CPU: 1 UID: 0 PID: 6339 Comm: kworker/u9:7 Not tainted syzkaller #0 PREEMPT(full) ** 52 printk messages dropped ** [ 581.834629][T13267] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci6/hci6:0' [ 581.839951][ T6339] Bluetooth: hci7: failed to register connection device [ 581.887145][ T6339] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci5/hci5:0' [ 581.893215][T13267] CPU: 0 UID: 0 PID: 13267 Comm: kworker/u9:12 Not tainted syzkaller #0 PREEMPT(full) [ 581.893242][T13267] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 [ 581.893331][T13267] Workqueue: hci6 hci_rx_work [ 581.893359][T13267] Call Trace: [ 581.893369][T13267] [ 581.893377][T13267] dump_stack_lvl+0x189/0x250 [ 581.893402][T13267] ? __pfx_dump_stack_lvl+0x10/0x10 [ 581.893420][T13267] ? __pfx__printk+0x10/0x10 [ 581.893451][T13267] ? kernfs_path_from_node+0x250/0x290 [ 581.893475][T13267] ? kernfs_path_from_node+0x2f/0x290 [ 581.893502][T13267] sysfs_create_dir_ns+0x259/0x280 [ 581.893536][T13267] ? __pfx_sysfs_create_dir_ns+0x10/0x10 [ 581.893562][T13267] ? do_raw_spin_unlock+0x122/0x240 [ 581.893587][T13267] kobject_add_internal+0x6ab/0xcc0 ** 40 printk messages dropped ** [ 581.897442][ T6339] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 [ 581.897454][ T6339] Workqueue: hci5 hci_rx_work ** 52 printk messages dropped ** [ 581.941343][ T5147] Bluetooth: hci7: command 0x2016 tx timeout [ 581.947293][T13267] CPU: 0 UID: 0 PID: 13267 Comm: kworker/u9:12 Not tainted syzkaller #0 PREEMPT(full) [ 581.947317][T13267] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 [ 581.947329][T13267] Workqueue: hci6 hci_rx_work [ 581.947365][T13267] Call Trace: [ 581.947373][T13267] [ 581.947382][T13267] dump_stack_lvl+0x189/0x250 [ 581.947406][T13267] ? __pfx_dump_stack_lvl+0x10/0x10 [ 581.947423][T13267] ? __pfx__printk+0x10/0x10 [ 581.947454][T13267] ? kernfs_path_from_node+0x250/0x290 [ 581.947477][T13267] ? kernfs_path_from_node+0x2f/0x290 [ 581.947505][T13267] sysfs_create_dir_ns+0x259/0x280 ** 44 printk messages dropped ** [ 582.067588][T13267] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci7/hci7:0' [ 582.072551][ T6339] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci6/hci6:0' [ 582.075452][T13267] CPU: 0 UID: 0 PID: 13267 Comm: kworker/u9:12 Not tainted syzkaller #0 PREEMPT(full) ** 52 printk messages dropped ** [ 582.080034][ T6339] CPU: 1 UID: 0 PID: 6339 Comm: kworker/u9:7 Not tainted syzkaller #0 PREEMPT(full) [ 582.080056][ T6339] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 [ 582.080067][ T6339] Workqueue: hci6 hci_rx_work [ 582.080092][ T6339] Call Trace: ** 50 printk messages dropped ** [ 582.102698][ T6339] Bluetooth: hci6: failed to register connection device [ 582.114755][ T5147] CPU: 0 UID: 0 PID: 5147 Comm: kworker/u9:1 Not tainted syzkaller #0 PREEMPT(full) [ 582.114779][ T5147] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 [ 582.114790][ T5147] Workqueue: hci4 hci_rx_work [ 582.114823][ T5147] Call Trace: [ 582.114831][ T5147] [ 582.114840][ T5147] dump_stack_lvl+0x189/0x250 [ 582.114862][ T5147] ? __pfx_dump_stack_lvl+0x10/0x10 [ 582.114880][ T5147] ? __pfx__printk+0x10/0x10 [ 582.114908][ T5147] ? kernfs_path_from_node+0x250/0x290 [ 582.114932][ T5147] ? kernfs_path_from_node+0x2f/0x290 [ 582.114959][ T5147] sysfs_create_dir_ns+0x259/0x280 [ 582.114985][ T5147] ? __pfx_sysfs_create_dir_ns+0x10/0x10 [ 582.115011][ T5147] ? do_raw_spin_unlock+0x122/0x240 [ 582.115036][ T5147] kobject_add_internal+0x6ab/0xcc0 [ 582.115062][ T5147] kobject_add+0x155/0x220 [ 582.115085][ T5147] ? __pfx_kobject_add+0x10/0x10 [ 582.115111][ T5147] ? _raw_spin_unlock+0x28/0x50 [ 582.115136][ T5147] ? get_device_parent+0x366/0x3a0 [ 582.115159][ T5147] device_add+0x408/0xb80 [ 582.115183][ T5147] hci_conn_add_sysfs+0xd5/0x210 [ 582.115209][ T5147] le_conn_complete_evt+0xf1d/0x1420 [ 582.115249][ T5147] ? __pfx_le_conn_complete_evt+0x10/0x10 [ 582.115266][ T5147] ? __mutex_unlock_slowpath+0x1a1/0x730 [ 582.115297][ T5147] ? __pfx___mutex_unlock_slowpath+0x10/0x10 ** 21 printk messages dropped ** [ 582.115871][ T5147] ret_from_fork+0x599/0xb30 ** 10 printk messages dropped ** [ 582.277687][ T5147] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci5/hci5:0' [ 582.279927][T13267] CPU: 1 UID: 0 PID: 13267 Comm: kworker/u9:12 Not tainted syzkaller #0 PREEMPT(full) ** 52 printk messages dropped ** [ 582.287316][ T5147] CPU: 0 UID: 0 PID: 5147 Comm: kworker/u9:1 Not tainted syzkaller #0 PREEMPT(full) [ 582.287339][ T5147] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 [ 582.287351][ T5147] Workqueue: hci5 hci_rx_work [ 582.287376][ T5147] Call Trace: [ 582.287384][ T5147] [ 582.287392][ T5147] dump_stack_lvl+0x189/0x250 [ 582.287414][ T5147] ? __pfx_dump_stack_lvl+0x10/0x10 [ 582.287432][ T5147] ? __pfx__printk+0x10/0x10 [ 582.287462][ T5147] ? kernfs_path_from_node+0x250/0x290 [ 582.287485][ T5147] ? kernfs_path_from_node+0x2f/0x290 [ 582.287520][ T5147] sysfs_create_dir_ns+0x259/0x280 [ 582.287547][ T5147] ? __pfx_sysfs_create_dir_ns+0x10/0x10 [ 582.287572][ T5147] ? do_raw_spin_unlock+0x122/0x240 [ 582.287597][ T5147] kobject_add_internal+0x6ab/0xcc0 [ 582.287624][ T5147] kobject_add+0x155/0x220 [ 582.287647][ T5147] ? __pfx_kobject_add+0x10/0x10 ** 42 printk messages dropped ** [ 582.416774][ T5147] CPU: 0 UID: 0 PID: 5147 Comm: kworker/u9:1 Not tainted syzkaller #0 PREEMPT(full) [ 582.416796][ T5147] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 ** 52 printk messages dropped ** [ 582.420963][T13267] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 ** 52 printk messages dropped ** [ 582.449380][T13267] Bluetooth: hci7: failed to register connection device [ 582.510868][ T5147] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci6/hci6:0' [ 582.583095][T13267] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci5/hci5:0' [ 582.584869][ T5147] CPU: 0 UID: 0 PID: 5147 Comm: kworker/u9:1 Not tainted syzkaller #0 PREEMPT(full) [ 582.584891][ T5147] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 [ 582.584904][ T5147] Workqueue: hci6 hci_rx_work [ 582.584931][ T5147] Call Trace: [ 582.584939][ T5147] [ 582.584947][ T5147] dump_stack_lvl+0x189/0x250 [ 582.584970][ T5147] ? __pfx_dump_stack_lvl+0x10/0x10 [ 582.584987][ T5147] ? __pfx__printk+0x10/0x10 [ 582.585017][ T5147] ? kernfs_path_from_node+0x250/0x290 [ 582.585040][ T5147] ? kernfs_path_from_node+0x2f/0x290 [ 582.585068][ T5147] sysfs_create_dir_ns+0x259/0x280 [ 582.585094][ T5147] ? __pfx_sysfs_create_dir_ns+0x10/0x10 [ 582.585119][ T5147] ? do_raw_spin_unlock+0x122/0x240 [ 582.585144][ T5147] kobject_add_internal+0x6ab/0xcc0 [ 582.585171][ T5147] kobject_add+0x155/0x220 [ 582.585193][ T5147] ? __pfx_kobject_add+0x10/0x10 [ 582.585219][ T5147] ? _raw_spin_unlock+0x28/0x50 [ 582.585244][ T5147] ? get_device_parent+0x366/0x3a0 [ 582.585267][ T5147] device_add+0x408/0xb80 [ 582.585298][ T5147] hci_conn_add_sysfs+0xd5/0x210 [ 582.585324][ T5147] le_conn_complete_evt+0xf1d/0x1420 [ 582.585353][ T5147] ? __pfx_le_conn_complete_evt+0x10/0x10 [ 582.585370][ T5147] ? __mutex_unlock_slowpath+0x1a1/0x730 [ 582.585402][ T5147] ? __pfx___mutex_unlock_slowpath+0x10/0x10 [ 582.585423][ T5147] ? skb_pull_data+0xfb/0x200 [ 582.585447][ T5147] hci_le_enh_conn_complete_evt+0x189/0x4a0 [ 582.585468][ T5147] ? __pfx_hci_le_enh_conn_complete_evt+0x10/0x10 [ 582.585492][ T5147] hci_event_packet+0x78f/0x1260 [ 582.585518][ T5147] ? __pfx_hci_le_meta_evt+0x10/0x10 [ 582.585539][ T5147] ? __pfx_hci_event_packet+0x10/0x10 [ 582.585565][ T5147] ? kcov_remote_start+0x18e/0x7f0 [ 582.585584][ T5147] ? lockdep_hardirqs_on+0x98/0x140 [ 582.585611][ T5147] ? hci_send_to_monitor+0xe2/0x590 ** 21 printk messages dropped ** [ 582.594807][T13267] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 ** 52 printk messages dropped ** [ 582.612803][T13267] Bluetooth: hci5: failed to register connection device [ 582.668189][ T5147] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci7/hci7:0' [ 582.694321][T13267] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci5/hci5:0' [ 582.694449][ T5147] CPU: 0 UID: 0 PID: 5147 Comm: kworker/u9:1 Not tainted syzkaller #0 PREEMPT(full) [ 582.694471][ T5147] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 [ 582.694484][ T5147] Workqueue: hci7 hci_rx_work [ 582.694511][ T5147] Call Trace: [ 582.694519][ T5147] [ 582.694527][ T5147] dump_stack_lvl+0x189/0x250 [ 582.694548][ T5147] ? __pfx_dump_stack_lvl+0x10/0x10 [ 582.694566][ T5147] ? __pfx__printk+0x10/0x10 [ 582.694596][ T5147] ? kernfs_path_from_node+0x250/0x290 [ 582.694619][ T5147] ? kernfs_path_from_node+0x2f/0x290 [ 582.694647][ T5147] sysfs_create_dir_ns+0x259/0x280 [ 582.694673][ T5147] ? __pfx_sysfs_create_dir_ns+0x10/0x10 [ 582.694698][ T5147] ? do_raw_spin_unlock+0x122/0x240 [ 582.694723][ T5147] kobject_add_internal+0x6ab/0xcc0 ** 40 printk messages dropped ** [ 582.699904][T13267] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 ** 52 printk messages dropped ** [ 582.720468][T13267] Bluetooth: hci5: failed to register connection device [ 582.731331][T13267] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci4/hci4:0' [ 582.790169][ T5147] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci6/hci6:0' [ 582.795557][T13267] CPU: 1 UID: 0 PID: 13267 Comm: kworker/u9:12 Not tainted syzkaller #0 PREEMPT(full) [ 582.795580][T13267] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 [ 582.795594][T13267] Workqueue: hci4 hci_rx_work [ 582.795621][T13267] Call Trace: [ 582.795629][T13267] [ 582.795637][T13267] dump_stack_lvl+0x189/0x250 [ 582.795660][T13267] ? __pfx_dump_stack_lvl+0x10/0x10 [ 582.795678][T13267] ? __pfx__printk+0x10/0x10 [ 582.795709][T13267] ? kernfs_path_from_node+0x250/0x290 [ 582.795737][T13267] ? kernfs_path_from_node+0x2f/0x290 [ 582.795764][T13267] sysfs_create_dir_ns+0x259/0x280 [ 582.795791][T13267] ? __pfx_sysfs_create_dir_ns+0x10/0x10 [ 582.795817][T13267] ? do_raw_spin_unlock+0x122/0x240 [ 582.795841][T13267] kobject_add_internal+0x6ab/0xcc0 [ 582.795868][T13267] kobject_add+0x155/0x220 [ 582.795891][T13267] ? __pfx_kobject_add+0x10/0x10 [ 582.795917][T13267] ? _raw_spin_unlock+0x28/0x50 [ 582.795942][T13267] ? get_device_parent+0x366/0x3a0 [ 582.795966][T13267] device_add+0x408/0xb80 ** 35 printk messages dropped ** [ 582.800538][ T5147] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 ** 53 printk messages dropped ** [ 582.833309][T13267] Bluetooth: hci4: command 0x2016 tx timeout [ 582.883656][ T5147] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci5/hci5:0' [ 582.900816][T13267] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci7/hci7:0' [ 582.905165][ T5147] CPU: 0 UID: 0 PID: 5147 Comm: kworker/u9:1 Not tainted syzkaller #0 PREEMPT(full) [ 582.905188][ T5147] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 [ 582.905201][ T5147] Workqueue: hci5 hci_rx_work [ 582.905228][ T5147] Call Trace: [ 582.905236][ T5147] [ 582.905245][ T5147] dump_stack_lvl+0x189/0x250 [ 582.905267][ T5147] ? __pfx_dump_stack_lvl+0x10/0x10 [ 582.905285][ T5147] ? __pfx__printk+0x10/0x10 [ 582.905314][ T5147] ? kernfs_path_from_node+0x250/0x290 [ 582.905338][ T5147] ? kernfs_path_from_node+0x2f/0x290 [ 582.905365][ T5147] sysfs_create_dir_ns+0x259/0x280 [ 582.905392][ T5147] ? __pfx_sysfs_create_dir_ns+0x10/0x10 [ 582.905417][ T5147] ? do_raw_spin_unlock+0x122/0x240 [ 582.905440][ T5147] kobject_add_internal+0x6ab/0xcc0 ** 39 printk messages dropped ** [ 582.910373][T13267] CPU: 1 UID: 0 PID: 13267 Comm: kworker/u9:12 Not tainted syzkaller #0 PREEMPT(full) [ 582.910396][T13267] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 [ 582.910407][T13267] Workqueue: hci7 hci_rx_work [ 582.910433][T13267] Call Trace: [ 582.910441][T13267] [ 582.910448][T13267] dump_stack_lvl+0x189/0x250 [ 582.910470][T13267] ? __pfx_dump_stack_lvl+0x10/0x10 ** 50 printk messages dropped ** [ 583.035269][ T5147] CPU: 0 UID: 0 PID: 5147 Comm: kworker/u9:1 Not tainted syzkaller #0 PREEMPT(full) [ 583.035292][ T5147] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 ** 52 printk messages dropped ** [ 583.040015][T13267] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 ** 53 printk messages dropped ** [ 583.099368][T13267] Bluetooth: hci5: failed to register connection device [ 583.099505][T13267] Bluetooth: hci5: command 0x2016 tx timeout [ 583.104026][ T5147] CPU: 0 UID: 0 PID: 5147 Comm: kworker/u9:1 Not tainted syzkaller #0 PREEMPT(full) [ 583.104048][ T5147] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 [ 583.104060][ T5147] Workqueue: hci7 hci_rx_work [ 583.104087][ T5147] Call Trace: [ 583.104096][ T5147] [ 583.104104][ T5147] dump_stack_lvl+0x189/0x250 [ 583.104126][ T5147] ? __pfx_dump_stack_lvl+0x10/0x10 [ 583.104142][ T5147] ? __pfx__printk+0x10/0x10 [ 583.104173][ T5147] ? kernfs_path_from_node+0x250/0x290 [ 583.104196][ T5147] ? kernfs_path_from_node+0x2f/0x290 [ 583.104224][ T5147] sysfs_create_dir_ns+0x259/0x280 [ 583.104249][ T5147] ? __pfx_sysfs_create_dir_ns+0x10/0x10 [ 583.104275][ T5147] ? do_raw_spin_unlock+0x122/0x240 [ 583.104300][ T5147] kobject_add_internal+0x6ab/0xcc0 [ 583.104327][ T5147] kobject_add+0x155/0x220 [ 583.104349][ T5147] ? __pfx_kobject_add+0x10/0x10 [ 583.104375][ T5147] ? _raw_spin_unlock+0x28/0x50 [ 583.104401][ T5147] ? get_device_parent+0x366/0x3a0 [ 583.104425][ T5147] device_add+0x408/0xb80 [ 583.104454][ T5147] hci_conn_add_sysfs+0xd5/0x210 [ 583.104484][ T5147] le_conn_complete_evt+0xf1d/0x1420 [ 583.104514][ T5147] ? __pfx_le_conn_complete_evt+0x10/0x10 [ 583.104531][ T5147] ? __mutex_unlock_slowpath+0x1a1/0x730 [ 583.104562][ T5147] ? __pfx___mutex_unlock_slowpath+0x10/0x10 [ 583.104584][ T5147] ? skb_pull_data+0xfb/0x200 [ 583.104609][ T5147] hci_le_enh_conn_complete_evt+0x189/0x4a0 ** 28 printk messages dropped ** [ 583.264350][ T5147] Bluetooth: hci7: failed to register connection device [ 583.269113][T13267] CPU: 1 UID: 0 PID: 13267 Comm: kworker/u9:12 Not tainted syzkaller #0 PREEMPT(full) [ 583.269137][T13267] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 [ 583.269149][T13267] Workqueue: hci6 hci_rx_work [ 583.269177][T13267] Call Trace: [ 583.269184][T13267] [ 583.269193][T13267] dump_stack_lvl+0x189/0x250 [ 583.269227][T13267] ? __pfx_dump_stack_lvl+0x10/0x10 [ 583.269244][T13267] ? __pfx__printk+0x10/0x10 [ 583.269275][T13267] ? kernfs_path_from_node+0x250/0x290 [ 583.269298][T13267] ? kernfs_path_from_node+0x2f/0x290 ** 43 printk messages dropped ** [ 583.288265][ T5147] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci4/hci4:0' [ 583.302899][T13267] Bluetooth: hci6: failed to register connection device [ 583.305871][ T5147] CPU: 0 UID: 0 PID: 5147 Comm: kworker/u9:1 Not tainted syzkaller #0 PREEMPT(full) ** 52 printk messages dropped ** [ 583.337536][T13267] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci5/hci5:0' [ 583.340968][ T5147] Bluetooth: hci4: failed to register connection device [ 583.357125][T13267] CPU: 1 UID: 0 PID: 13267 Comm: kworker/u9:12 Not tainted syzkaller #0 PREEMPT(full) [ 583.357152][T13267] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 [ 583.357164][T13267] Workqueue: hci5 hci_rx_work [ 583.357193][T13267] Call Trace: [ 583.357209][T13267] [ 583.357217][T13267] dump_stack_lvl+0x189/0x250 [ 583.357240][T13267] ? __pfx_dump_stack_lvl+0x10/0x10 [ 583.357258][T13267] ? __pfx__printk+0x10/0x10 [ 583.357288][T13267] ? kernfs_path_from_node+0x250/0x290 ** 46 printk messages dropped ** [ 583.462325][ T5147] CPU: 0 UID: 0 PID: 5147 Comm: kworker/u9:1 Not tainted syzkaller #0 PREEMPT(full) ** 52 printk messages dropped ** [ 583.471324][T13267] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci4/hci4:0' [ 583.482863][ T5147] Bluetooth: hci7: failed to register connection device [ 583.488753][T13267] CPU: 1 UID: 0 PID: 13267 Comm: kworker/u9:12 Not tainted syzkaller #0 PREEMPT(full) [ 583.488774][T13267] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 [ 583.488785][T13267] Workqueue: hci4 hci_rx_work [ 583.488813][T13267] Call Trace: [ 583.488820][T13267] [ 583.488828][T13267] dump_stack_lvl+0x189/0x250 [ 583.488850][T13267] ? __pfx_dump_stack_lvl+0x10/0x10 [ 583.488865][T13267] ? __pfx__printk+0x10/0x10 [ 583.488895][T13267] ? kernfs_path_from_node+0x250/0x290 [ 583.488919][T13267] ? kernfs_path_from_node+0x2f/0x290 [ 583.488946][T13267] sysfs_create_dir_ns+0x259/0x280 [ 583.488972][T13267] ? __pfx_sysfs_create_dir_ns+0x10/0x10 [ 583.488996][T13267] ? do_raw_spin_unlock+0x122/0x240 [ 583.489021][T13267] kobject_add_internal+0x6ab/0xcc0 [ 583.489047][T13267] kobject_add+0x155/0x220 [ 583.489070][T13267] ? __pfx_kobject_add+0x10/0x10 [ 583.489096][T13267] ? _raw_spin_unlock+0x28/0x50 [ 583.489121][T13267] ? get_device_parent+0x366/0x3a0 [ 583.489145][T13267] device_add+0x408/0xb80 [ 583.489168][T13267] hci_conn_add_sysfs+0xd5/0x210 [ 583.489201][T13267] le_conn_complete_evt+0xf1d/0x1420 [ 583.489230][T13267] ? __pfx_le_conn_complete_evt+0x10/0x10 [ 583.489248][T13267] ? __mutex_unlock_slowpath+0x1a1/0x730 [ 583.489279][T13267] ? __pfx___mutex_unlock_slowpath+0x10/0x10 [ 583.489301][T13267] ? skb_pull_data+0xfb/0x200 [ 583.489324][T13267] hci_le_enh_conn_complete_evt+0x189/0x4a0 [ 583.489345][T13267] ? __pfx_hci_le_enh_conn_complete_evt+0x10/0x10 [ 583.489369][T13267] hci_event_packet+0x78f/0x1260 [ 583.489395][T13267] ? __pfx_hci_le_meta_evt+0x10/0x10 ** 26 printk messages dropped ** [ 583.580494][ T5147] CPU: 0 UID: 0 PID: 5147 Comm: kworker/u9:1 Not tainted syzkaller #0 PREEMPT(full) ** 53 printk messages dropped ** [ 583.628304][ T5147] Bluetooth: hci5: failed to register connection device [ 583.632891][T13267] CPU: 1 UID: 0 PID: 13267 Comm: kworker/u9:12 Not tainted syzkaller #0 PREEMPT(full) [ 583.632916][T13267] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 ** 3 printk messages dropped ** [ 583.632970][T13267] dump_stack_lvl+0x189/0x250 ** 48 printk messages dropped ** [ 583.688996][T11292] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci6/hci6:0' [ 583.693788][ T5147] CPU: 0 UID: 0 PID: 5147 Comm: kworker/u9:1 Not tainted syzkaller #0 PREEMPT(full) [ 583.693808][ T5147] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 [ 583.693821][ T5147] Workqueue: hci5 hci_rx_work [ 583.693849][ T5147] Call Trace: [ 583.693858][ T5147] [ 583.693866][ T5147] dump_stack_lvl+0x189/0x250 [ 583.693889][ T5147] ? __pfx_dump_stack_lvl+0x10/0x10 ** 47 printk messages dropped ** [ 583.699196][T11292] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 [ 583.699207][T11292] Workqueue: hci6 hci_rx_work [ 583.699229][T11292] Call Trace: [ 583.699236][T11292] [ 583.699244][T11292] dump_stack_lvl+0x189/0x250 [ 583.699262][T11292] ? __pfx_dump_stack_lvl+0x10/0x10 2025/12/02 02:19:08 executed programs: 4302 [ 583.699276][T11292] ? __pfx__printk+0x10/0x10 [ 583.699303][T11292] ? kernfs_path_from_node+0x250/0x290 ** 47 printk messages dropped ** [ 583.784477][T13267] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci4/hci4:0' [ 583.871003][T11292] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci6/hci6:0' [ 583.871026][T11292] CPU: 0 UID: 0 PID: 11292 Comm: kworker/u9:10 Not tainted syzkaller #0 PREEMPT(full) [ 583.871048][T11292] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 [ 583.871061][T11292] Workqueue: hci6 hci_rx_work [ 583.871088][T11292] Call Trace: [ 583.871096][T11292] [ 583.871104][T11292] dump_stack_lvl+0x189/0x250 [ 583.871127][T11292] ? __pfx_dump_stack_lvl+0x10/0x10 [ 583.871144][T11292] ? __pfx__printk+0x10/0x10 ** 45 printk messages dropped ** [ 583.890884][T13267] CPU: 1 UID: 0 PID: 13267 Comm: kworker/u9:12 Not tainted syzkaller #0 PREEMPT(full) [ 583.890909][T13267] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 [ 583.890921][T13267] Workqueue: hci4 hci_rx_work [ 583.890948][T13267] Call Trace: [ 583.890957][T13267] [ 583.890965][T13267] dump_stack_lvl+0x189/0x250 [ 583.890988][T13267] ? __pfx_dump_stack_lvl+0x10/0x10 [ 583.891006][T13267] ? __pfx__printk+0x10/0x10 [ 583.891035][T13267] ? kernfs_path_from_node+0x250/0x290 [ 583.891058][T13267] ? kernfs_path_from_node+0x2f/0x290 [ 583.891085][T13267] sysfs_create_dir_ns+0x259/0x280 ** 44 printk messages dropped ** [ 583.942478][T13267] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci5/hci5:0' [ 583.975226][T11292] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci7/hci7:0' [ 583.975250][T11292] CPU: 0 UID: 0 PID: 11292 Comm: kworker/u9:10 Not tainted syzkaller #0 PREEMPT(full) [ 583.975270][T11292] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 [ 583.975283][T11292] Workqueue: hci7 hci_rx_work [ 583.975310][T11292] Call Trace: [ 583.975317][T11292] [ 583.975326][T11292] dump_stack_lvl+0x189/0x250 [ 583.975349][T11292] ? __pfx_dump_stack_lvl+0x10/0x10 [ 583.975366][T11292] ? __pfx__printk+0x10/0x10 [ 583.975394][T11292] ? kernfs_path_from_node+0x250/0x290 [ 583.975423][T11292] ? kernfs_path_from_node+0x2f/0x290 [ 583.975451][T11292] sysfs_create_dir_ns+0x259/0x280 ** 42 printk messages dropped ** [ 583.999961][T13267] CPU: 1 UID: 0 PID: 13267 Comm: kworker/u9:12 Not tainted syzkaller #0 PREEMPT(full) [ 583.999985][T13267] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 [ 583.999997][T13267] Workqueue: hci5 hci_rx_work [ 584.000025][T13267] Call Trace: ** 51 printk messages dropped ** [ 584.031298][T11292] Bluetooth: hci7: command 0x2016 tx timeout [ 584.160944][T13267] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci4/hci4:0' [ 584.181066][T11292] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci5/hci5:0' [ 584.185976][T13267] CPU: 1 UID: 0 PID: 13267 Comm: kworker/u9:12 Not tainted syzkaller #0 PREEMPT(full) [ 584.186001][T13267] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 [ 584.186013][T13267] Workqueue: hci4 hci_rx_work ** 50 printk messages dropped ** [ 584.190038][T11292] CPU: 0 UID: 0 PID: 11292 Comm: kworker/u9:10 Not tainted syzkaller #0 PREEMPT(full) [ 584.190060][T11292] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 [ 584.190071][T11292] Workqueue: hci5 hci_rx_work [ 584.190095][T11292] Call Trace: [ 584.190102][T11292] [ 584.190110][T11292] dump_stack_lvl+0x189/0x250 ** 49 printk messages dropped ** [ 584.248493][T13267] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci6/hci6:0' [ 584.265700][T11292] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci7/hci7:0' [ 584.273305][T13267] CPU: 1 UID: 0 PID: 13267 Comm: kworker/u9:12 Not tainted syzkaller #0 PREEMPT(full) [ 584.273330][T13267] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 [ 584.273343][T13267] Workqueue: hci6 hci_rx_work [ 584.273372][T13267] Call Trace: [ 584.273381][T13267] [ 584.273389][T13267] dump_stack_lvl+0x189/0x250 [ 584.273411][T13267] ? __pfx_dump_stack_lvl+0x10/0x10 [ 584.273429][T13267] ? __pfx__printk+0x10/0x10 [ 584.273459][T13267] ? kernfs_path_from_node+0x250/0x290 [ 584.273482][T13267] ? kernfs_path_from_node+0x2f/0x290 [ 584.273509][T13267] sysfs_create_dir_ns+0x259/0x280 [ 584.273534][T13267] ? __pfx_sysfs_create_dir_ns+0x10/0x10 [ 584.273559][T13267] ? do_raw_spin_unlock+0x122/0x240 [ 584.273584][T13267] kobject_add_internal+0x6ab/0xcc0 [ 584.273611][T13267] kobject_add+0x155/0x220 [ 584.273633][T13267] ? __pfx_kobject_add+0x10/0x10 [ 584.273659][T13267] ? _raw_spin_unlock+0x28/0x50 ** 48 printk messages dropped ** [ 584.280131][T11292] ? do_raw_spin_unlock+0x122/0x240 ** 41 printk messages dropped ** [ 584.303718][T11292] Bluetooth: hci7: failed to register connection device ** 1 printk messages dropped ** [ 584.397920][T11292] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci4/hci4:0' [ 584.401193][T13267] CPU: 1 UID: 0 PID: 13267 Comm: kworker/u9:12 Not tainted syzkaller #0 PREEMPT(full) [ 584.401216][T13267] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 [ 584.401229][T13267] Workqueue: hci5 hci_rx_work [ 584.401258][T13267] Call Trace: [ 584.401266][T13267] [ 584.401275][T13267] dump_stack_lvl+0x189/0x250 [ 584.401297][T13267] ? __pfx_dump_stack_lvl+0x10/0x10 [ 584.401321][T13267] ? __pfx__printk+0x10/0x10 [ 584.401351][T13267] ? kernfs_path_from_node+0x250/0x290 [ 584.401375][T13267] ? kernfs_path_from_node+0x2f/0x290 [ 584.401402][T13267] sysfs_create_dir_ns+0x259/0x280 [ 584.401428][T13267] ? __pfx_sysfs_create_dir_ns+0x10/0x10 [ 584.401454][T13267] ? do_raw_spin_unlock+0x122/0x240 [ 584.401479][T13267] kobject_add_internal+0x6ab/0xcc0 [ 584.401505][T13267] kobject_add+0x155/0x220 [ 584.401528][T13267] ? __pfx_kobject_add+0x10/0x10 ** 17 printk messages dropped ** [ 584.401966][T13267] hci_rx_work+0x3ee/0x1060 ** 20 printk messages dropped ** [ 584.406096][T11292] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 ** 54 printk messages dropped ** [ 584.503925][T11292] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci7/hci7:0' [ 584.509590][ T5147] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci6/hci6:0' [ 584.514847][T11292] CPU: 0 UID: 0 PID: 11292 Comm: kworker/u9:10 Not tainted syzkaller #0 PREEMPT(full) [ 584.514872][T11292] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 [ 584.514885][T11292] Workqueue: hci7 hci_rx_work [ 584.514912][T11292] Call Trace: [ 584.514920][T11292] [ 584.514929][T11292] dump_stack_lvl+0x189/0x250 [ 584.514951][T11292] ? __pfx_dump_stack_lvl+0x10/0x10 [ 584.514969][T11292] ? __pfx__printk+0x10/0x10 [ 584.514999][T11292] ? kernfs_path_from_node+0x250/0x290 [ 584.515021][T11292] ? kernfs_path_from_node+0x2f/0x290 [ 584.515049][T11292] sysfs_create_dir_ns+0x259/0x280 [ 584.515083][T11292] ? __pfx_sysfs_create_dir_ns+0x10/0x10 [ 584.515109][T11292] ? do_raw_spin_unlock+0x122/0x240 ** 41 printk messages dropped ** [ 584.518504][ T5147] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 ** 53 printk messages dropped ** [ 584.581192][T13267] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci5/hci5:0' [ 584.631267][T11292] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci7/hci7:0' [ 584.633590][T13267] CPU: 1 UID: 0 PID: 13267 Comm: kworker/u9:12 Not tainted syzkaller #0 PREEMPT(full) [ 584.633613][T13267] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 [ 584.633626][T13267] Workqueue: hci5 hci_rx_work [ 584.633654][T13267] Call Trace: [ 584.633663][T13267] ** 33 printk messages dropped ** [ 584.634514][T13267] worker_thread+0x9b0/0xee0 ** 14 printk messages dropped ** [ 584.638433][T11292] CPU: 0 UID: 0 PID: 11292 Comm: kworker/u9:10 Not tainted syzkaller #0 PREEMPT(full) [ 584.638453][T11292] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 [ 584.638464][T11292] Workqueue: hci7 hci_rx_work [ 584.638487][T11292] Call Trace: [ 584.638495][T11292] [ 584.638503][T11292] dump_stack_lvl+0x189/0x250 [ 584.638524][T11292] ? __pfx_dump_stack_lvl+0x10/0x10 [ 584.638541][T11292] ? __pfx__printk+0x10/0x10 [ 584.638570][T11292] ? kernfs_path_from_node+0x250/0x290 [ 584.638592][T11292] ? kernfs_path_from_node+0x2f/0x290 [ 584.638619][T11292] sysfs_create_dir_ns+0x259/0x280 [ 584.638645][T11292] ? __pfx_sysfs_create_dir_ns+0x10/0x10 [ 584.638670][T11292] ? do_raw_spin_unlock+0x122/0x240 [ 584.638694][T11292] kobject_add_internal+0x6ab/0xcc0 [ 584.638720][T11292] kobject_add+0x155/0x220 [ 584.638742][T11292] ? __pfx_kobject_add+0x10/0x10 [ 584.638768][T11292] ? _raw_spin_unlock+0x28/0x50 [ 584.638792][T11292] ? get_device_parent+0x366/0x3a0 [ 584.638815][T11292] device_add+0x408/0xb80 [ 584.638837][T11292] hci_conn_add_sysfs+0xd5/0x210 ** 35 printk messages dropped ** [ 584.664153][T11292] Bluetooth: hci7: failed to register connection device [ 584.682718][T13267] CPU: 1 UID: 0 PID: 13267 Comm: kworker/u9:12 Not tainted syzkaller #0 PREEMPT(full) [ 584.682744][T13267] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 [ 584.682755][T13267] Workqueue: hci4 hci_rx_work [ 584.682781][T13267] Call Trace: [ 584.682790][T13267] [ 584.682797][T13267] dump_stack_lvl+0x189/0x250 [ 584.682819][T13267] ? __pfx_dump_stack_lvl+0x10/0x10 [ 584.682838][T13267] ? __pfx__printk+0x10/0x10 [ 584.682869][T13267] ? kernfs_path_from_node+0x250/0x290 [ 584.682892][T13267] ? kernfs_path_from_node+0x2f/0x290 [ 584.682918][T13267] sysfs_create_dir_ns+0x259/0x280 [ 584.682945][T13267] ? __pfx_sysfs_create_dir_ns+0x10/0x10 [ 584.682970][T13267] ? do_raw_spin_unlock+0x122/0x240 [ 584.682995][T13267] kobject_add_internal+0x6ab/0xcc0 [ 584.683021][T13267] kobject_add+0x155/0x220 [ 584.683043][T13267] ? __pfx_kobject_add+0x10/0x10 [ 584.683070][T13267] ? _raw_spin_unlock+0x28/0x50 ** 46 printk messages dropped ** [ 584.775000][T11292] ? kernfs_path_from_node+0x250/0x290 ** 45 printk messages dropped ** [ 584.813373][T11292] Bluetooth: hci6: failed to register connection device [ 584.822824][T13267] CPU: 1 UID: 0 PID: 13267 Comm: kworker/u9:12 Not tainted syzkaller #0 PREEMPT(full) [ 584.822846][T13267] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 [ 584.822857][T13267] Workqueue: hci4 hci_rx_work [ 584.822883][T13267] Call Trace: ** 50 printk messages dropped ** [ 584.945595][T13267] Bluetooth: hci4: failed to register connection device [ 584.951387][T11292] CPU: 0 UID: 0 PID: 11292 Comm: kworker/u9:10 Not tainted syzkaller #0 PREEMPT(full) [ 584.951409][T11292] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 [ 584.951422][T11292] Workqueue: hci5 hci_rx_work [ 584.951449][T11292] Call Trace: [ 584.951458][T11292] [ 584.951466][T11292] dump_stack_lvl+0x189/0x250 [ 584.951489][T11292] ? __pfx_dump_stack_lvl+0x10/0x10 [ 584.951507][T11292] ? __pfx__printk+0x10/0x10 [ 584.951537][T11292] ? kernfs_path_from_node+0x250/0x290 [ 584.951560][T11292] ? kernfs_path_from_node+0x2f/0x290 [ 584.951587][T11292] sysfs_create_dir_ns+0x259/0x280 [ 584.951613][T11292] ? __pfx_sysfs_create_dir_ns+0x10/0x10 ** 42 printk messages dropped ** [ 584.973293][T11292] Bluetooth: hci5: failed to register connection device [ 584.978898][ T5147] Bluetooth: hci4: command 0x2016 tx timeout [ 585.007455][T11292] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci6/hci6:0' [ 585.011962][T13267] CPU: 1 UID: 0 PID: 13267 Comm: kworker/u9:12 Not tainted syzkaller #0 PREEMPT(full) [ 585.011994][T13267] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 [ 585.012007][T13267] Workqueue: hci7 hci_rx_work [ 585.012035][T13267] Call Trace: ** 49 printk messages dropped ** [ 585.014435][T11292] CPU: 0 UID: 0 PID: 11292 Comm: kworker/u9:10 Not tainted syzkaller #0 PREEMPT(full) [ 585.014456][T11292] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 [ 585.014468][T11292] Workqueue: hci6 hci_rx_work [ 585.014491][T11292] Call Trace: [ 585.014499][T11292] [ 585.014507][T11292] dump_stack_lvl+0x189/0x250 [ 585.014527][T11292] ? __pfx_dump_stack_lvl+0x10/0x10 [ 585.014543][T11292] ? __pfx__printk+0x10/0x10 [ 585.014573][T11292] ? kernfs_path_from_node+0x250/0x290 [ 585.014596][T11292] ? kernfs_path_from_node+0x2f/0x290 [ 585.014622][T11292] sysfs_create_dir_ns+0x259/0x280 [ 585.014649][T11292] ? __pfx_sysfs_create_dir_ns+0x10/0x10 [ 585.014674][T11292] ? do_raw_spin_unlock+0x122/0x240 [ 585.014699][T11292] kobject_add_internal+0x6ab/0xcc0 [ 585.014724][T11292] kobject_add+0x155/0x220 [ 585.014746][T11292] ? __pfx_kobject_add+0x10/0x10 [ 585.014772][T11292] ? _raw_spin_unlock+0x28/0x50 [ 585.014797][T11292] ? get_device_parent+0x366/0x3a0 [ 585.014819][T11292] device_add+0x408/0xb80 [ 585.014842][T11292] hci_conn_add_sysfs+0xd5/0x210 [ 585.014868][T11292] le_conn_complete_evt+0xf1d/0x1420 [ 585.014898][T11292] ? __pfx_le_conn_complete_evt+0x10/0x10 [ 585.014915][T11292] ? __mutex_unlock_slowpath+0x1a1/0x730 [ 585.014945][T11292] ? __pfx___mutex_unlock_slowpath+0x10/0x10 ** 32 printk messages dropped ** [ 585.135134][T13267] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci6/hci6:0' ** 53 printk messages dropped ** [ 585.144144][ T5147] Bluetooth: hci5: command 0x2016 tx timeout [ 585.157697][T11292] Bluetooth: hci4: failed to register connection device [ 585.167337][T13267] CPU: 1 UID: 0 PID: 13267 Comm: kworker/u9:12 Not tainted syzkaller #0 PREEMPT(full) [ 585.167361][T13267] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 [ 585.167373][T13267] Workqueue: hci6 hci_rx_work [ 585.167400][T13267] Call Trace: [ 585.167407][T13267] [ 585.167415][T13267] dump_stack_lvl+0x189/0x250 [ 585.167438][T13267] ? __pfx_dump_stack_lvl+0x10/0x10 ** 64 printk messages dropped ** [ 585.270041][ T5147] ? _raw_spin_unlock+0x28/0x50 ** 36 printk messages dropped ** [ 585.317755][T13267] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci7/hci7:0' [ 585.328785][ T5147] Bluetooth: hci5: failed to register connection device [ 585.333148][T13267] CPU: 1 UID: 0 PID: 13267 Comm: kworker/u9:12 Not tainted syzkaller #0 PREEMPT(full) [ 585.333170][T13267] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 [ 585.333182][T13267] Workqueue: hci7 hci_rx_work [ 585.333210][T13267] Call Trace: [ 585.333218][T13267] [ 585.333226][T13267] dump_stack_lvl+0x189/0x250 [ 585.333248][T13267] ? __pfx_dump_stack_lvl+0x10/0x10 [ 585.333266][T13267] ? __pfx__printk+0x10/0x10 [ 585.333297][T13267] ? kernfs_path_from_node+0x250/0x290 [ 585.333319][T13267] ? kernfs_path_from_node+0x2f/0x290 [ 585.333347][T13267] sysfs_create_dir_ns+0x259/0x280 [ 585.333373][T13267] ? __pfx_sysfs_create_dir_ns+0x10/0x10 [ 585.333399][T13267] ? do_raw_spin_unlock+0x122/0x240 [ 585.333423][T13267] kobject_add_internal+0x6ab/0xcc0 [ 585.333450][T13267] kobject_add+0x155/0x220 [ 585.333473][T13267] ? __pfx_kobject_add+0x10/0x10 [ 585.333499][T13267] ? _raw_spin_unlock+0x28/0x50 [ 585.333528][T13267] ? get_device_parent+0x366/0x3a0 [ 585.333552][T13267] device_add+0x408/0xb80 [ 585.333576][T13267] hci_conn_add_sysfs+0xd5/0x210 [ 585.333602][T13267] le_conn_complete_evt+0xf1d/0x1420 [ 585.333631][T13267] ? __pfx_le_conn_complete_evt+0x10/0x10 [ 585.333648][T13267] ? __mutex_unlock_slowpath+0x1a1/0x730 [ 585.333678][T13267] ? __pfx___mutex_unlock_slowpath+0x10/0x10 [ 585.333700][T13267] ? skb_pull_data+0xfb/0x200 [ 585.333723][T13267] hci_le_enh_conn_complete_evt+0x189/0x4a0 [ 585.333744][T13267] ? __pfx_hci_le_enh_conn_complete_evt+0x10/0x10 [ 585.333768][T13267] hci_event_packet+0x78f/0x1260 [ 585.333795][T13267] ? __pfx_hci_le_meta_evt+0x10/0x10 [ 585.333816][T13267] ? __pfx_hci_event_packet+0x10/0x10 ** 31 printk messages dropped ** [ 585.398314][ T5147] ? __pfx_dump_stack_lvl+0x10/0x10 ** 46 printk messages dropped ** [ 585.415697][T13267] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci5/hci5:0' [ 585.425508][ T5147] Bluetooth: hci4: failed to register connection device [ 585.461258][ T5147] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci6/hci6:0' [ 585.463601][T13267] CPU: 1 UID: 0 PID: 13267 Comm: kworker/u9:12 Not tainted syzkaller #0 PREEMPT(full) [ 585.463624][T13267] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 [ 585.463637][T13267] Workqueue: hci5 hci_rx_work [ 585.463665][T13267] Call Trace: [ 585.463673][T13267] [ 585.463681][T13267] dump_stack_lvl+0x189/0x250 [ 585.463703][T13267] ? __pfx_dump_stack_lvl+0x10/0x10 [ 585.463721][T13267] ? __pfx__printk+0x10/0x10 [ 585.463751][T13267] ? kernfs_path_from_node+0x250/0x290 [ 585.463774][T13267] ? kernfs_path_from_node+0x2f/0x290 [ 585.463801][T13267] sysfs_create_dir_ns+0x259/0x280 [ 585.463827][T13267] ? __pfx_sysfs_create_dir_ns+0x10/0x10 [ 585.463853][T13267] ? do_raw_spin_unlock+0x122/0x240 [ 585.463878][T13267] kobject_add_internal+0x6ab/0xcc0 [ 585.463904][T13267] kobject_add+0x155/0x220 [ 585.463927][T13267] ? __pfx_kobject_add+0x10/0x10 [ 585.463953][T13267] ? _raw_spin_unlock+0x28/0x50 [ 585.463983][T13267] ? get_device_parent+0x366/0x3a0 ** 36 printk messages dropped ** [ 585.472220][ T5147] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 ** 52 printk messages dropped ** [ 585.493279][ T5147] Bluetooth: hci6: failed to register connection device [ 585.600218][T13267] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci7/hci7:0' [ 585.600241][T13267] CPU: 1 UID: 0 PID: 13267 Comm: kworker/u9:12 Not tainted syzkaller #0 PREEMPT(full) [ 585.600260][T13267] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 [ 585.600271][T13267] Workqueue: hci7 hci_rx_work [ 585.600298][T13267] Call Trace: [ 585.600305][T13267] [ 585.600314][T13267] dump_stack_lvl+0x189/0x250 [ 585.600337][T13267] ? __pfx_dump_stack_lvl+0x10/0x10 [ 585.600354][T13267] ? __pfx__printk+0x10/0x10 [ 585.600385][T13267] ? kernfs_path_from_node+0x250/0x290 [ 585.600408][T13267] ? kernfs_path_from_node+0x2f/0x290 [ 585.600436][T13267] sysfs_create_dir_ns+0x259/0x280 [ 585.600462][T13267] ? __pfx_sysfs_create_dir_ns+0x10/0x10 [ 585.600488][T13267] ? do_raw_spin_unlock+0x122/0x240 [ 585.600514][T13267] kobject_add_internal+0x6ab/0xcc0 [ 585.600541][T13267] kobject_add+0x155/0x220 [ 585.600564][T13267] ? __pfx_kobject_add+0x10/0x10 [ 585.600591][T13267] ? _raw_spin_unlock+0x28/0x50 [ 585.600615][T13267] ? get_device_parent+0x366/0x3a0 [ 585.600638][T13267] device_add+0x408/0xb80 [ 585.600661][T13267] hci_conn_add_sysfs+0xd5/0x210 [ 585.600687][T13267] le_conn_complete_evt+0xf1d/0x1420 [ 585.600716][T13267] ? __pfx_le_conn_complete_evt+0x10/0x10 [ 585.600734][T13267] ? __mutex_unlock_slowpath+0x1a1/0x730 ** 32 printk messages dropped ** [ 585.633429][ T5147] CPU: 0 UID: 0 PID: 5147 Comm: kworker/u9:1 Not tainted syzkaller #0 PREEMPT(full) ** 53 printk messages dropped ** [ 585.669502][ T5147] Bluetooth: hci6: failed to register connection device [ 585.686656][T13267] CPU: 1 UID: 0 PID: 13267 Comm: kworker/u9:12 Not tainted syzkaller #0 PREEMPT(full) [ 585.686682][T13267] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 [ 585.686694][T13267] Workqueue: hci4 hci_rx_work [ 585.686723][T13267] Call Trace: ** 50 printk messages dropped ** [ 585.688485][T13267] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci5/hci5:0' [ 585.806994][T11292] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci4/hci4:0' [ 585.816187][T13267] CPU: 1 UID: 0 PID: 13267 Comm: kworker/u9:12 Not tainted syzkaller #0 PREEMPT(full) [ 585.816219][T13267] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 [ 585.816232][T13267] Workqueue: hci5 hci_rx_work ** 50 printk messages dropped ** [ 585.837994][T11292] CPU: 0 UID: 0 PID: 11292 Comm: kworker/u9:10 Not tainted syzkaller #0 PREEMPT(full) [ 585.838021][T11292] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 ** 12 printk messages dropped ** [ 585.838302][T11292] kobject_add+0x155/0x220 ** 40 printk messages dropped ** [ 585.867477][T11292] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci7/hci7:0' [ 585.889844][T13267] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci6/hci6:0' [ 585.893026][T11292] CPU: 0 UID: 0 PID: 11292 Comm: kworker/u9:10 Not tainted syzkaller #0 PREEMPT(full) [ 585.893049][T11292] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 [ 585.893059][T11292] Workqueue: hci7 hci_rx_work [ 585.893087][T11292] Call Trace: [ 585.893096][T11292] [ 585.893104][T11292] dump_stack_lvl+0x189/0x250 [ 585.893126][T11292] ? __pfx_dump_stack_lvl+0x10/0x10 [ 585.893145][T11292] ? __pfx__printk+0x10/0x10 [ 585.893174][T11292] ? kernfs_path_from_node+0x250/0x290 [ 585.893196][T11292] ? kernfs_path_from_node+0x2f/0x290 ** 43 printk messages dropped ** [ 585.898809][T13267] CPU: 1 UID: 0 PID: 13267 Comm: kworker/u9:12 Not tainted syzkaller #0 PREEMPT(full) [ 585.898832][T13267] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 [ 585.898844][T13267] Workqueue: hci6 hci_rx_work [ 585.898868][T13267] Call Trace: [ 585.898876][T13267] [ 585.898884][T13267] dump_stack_lvl+0x189/0x250 [ 585.898906][T13267] ? __pfx_dump_stack_lvl+0x10/0x10 [ 585.898923][T13267] ? __pfx__printk+0x10/0x10 [ 585.898952][T13267] ? kernfs_path_from_node+0x250/0x290 [ 585.898975][T13267] ? kernfs_path_from_node+0x2f/0x290 [ 585.899002][T13267] sysfs_create_dir_ns+0x259/0x280 [ 585.899028][T13267] ? __pfx_sysfs_create_dir_ns+0x10/0x10 [ 585.899054][T13267] ? do_raw_spin_unlock+0x122/0x240 [ 585.899078][T13267] kobject_add_internal+0x6ab/0xcc0 [ 585.899104][T13267] kobject_add+0x155/0x220 [ 585.899126][T13267] ? __pfx_kobject_add+0x10/0x10 ** 39 printk messages dropped ** [ 585.956806][T11292] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci5/hci5:0' [ 586.043510][T13267] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci4/hci4:0' [ 586.046546][T11292] CPU: 0 UID: 0 PID: 11292 Comm: kworker/u9:10 Not tainted syzkaller #0 PREEMPT(full) [ 586.046569][T11292] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 [ 586.046581][T11292] Workqueue: hci5 hci_rx_work [ 586.046610][T11292] Call Trace: [ 586.046618][T11292] [ 586.046626][T11292] dump_stack_lvl+0x189/0x250 [ 586.046650][T11292] ? __pfx_dump_stack_lvl+0x10/0x10 [ 586.046667][T11292] ? __pfx__printk+0x10/0x10 [ 586.046697][T11292] ? kernfs_path_from_node+0x250/0x290 [ 586.046720][T11292] ? kernfs_path_from_node+0x2f/0x290 [ 586.046747][T11292] sysfs_create_dir_ns+0x259/0x280 [ 586.046773][T11292] ? __pfx_sysfs_create_dir_ns+0x10/0x10 [ 586.046798][T11292] ? do_raw_spin_unlock+0x122/0x240 [ 586.046823][T11292] kobject_add_internal+0x6ab/0xcc0 [ 586.046850][T11292] kobject_add+0x155/0x220 [ 586.046873][T11292] ? __pfx_kobject_add+0x10/0x10 ** 38 printk messages dropped ** [ 586.066087][T13267] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 ** 53 printk messages dropped ** [ 586.123761][T11292] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci6/hci6:0' [ 586.167431][T13267] Bluetooth: hci7: command 0x2016 tx timeout [ 586.172538][T11292] CPU: 0 UID: 0 PID: 11292 Comm: kworker/u9:10 Not tainted syzkaller #0 PREEMPT(full) [ 586.172561][T11292] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 ** 52 printk messages dropped ** [ 586.196496][T11292] Bluetooth: hci6: failed to register connection device [ 586.235557][T11292] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci7/hci7:0' [ 586.238652][T13267] CPU: 1 UID: 0 PID: 13267 Comm: kworker/u9:12 Not tainted syzkaller #0 PREEMPT(full) [ 586.238676][T13267] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 [ 586.238688][T13267] Workqueue: hci5 hci_rx_work [ 586.238716][T13267] Call Trace: [ 586.238725][T13267] [ 586.238732][T13267] dump_stack_lvl+0x189/0x250 [ 586.238755][T13267] ? __pfx_dump_stack_lvl+0x10/0x10 [ 586.238773][T13267] ? __pfx__printk+0x10/0x10 [ 586.238803][T13267] ? kernfs_path_from_node+0x250/0x290 [ 586.238826][T13267] ? kernfs_path_from_node+0x2f/0x290 [ 586.238853][T13267] sysfs_create_dir_ns+0x259/0x280 [ 586.238885][T13267] ? __pfx_sysfs_create_dir_ns+0x10/0x10 [ 586.238915][T13267] ? do_raw_spin_unlock+0x122/0x240 [ 586.238940][T13267] kobject_add_internal+0x6ab/0xcc0 ** 4 printk messages dropped ** [ 586.239071][T13267] device_add+0x408/0xb80 ** 34 printk messages dropped ** [ 586.242166][T11292] CPU: 0 UID: 0 PID: 11292 Comm: kworker/u9:10 Not tainted syzkaller #0 PREEMPT(full) [ 586.242187][T11292] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 [ 586.242199][T11292] Workqueue: hci7 hci_rx_work ** 52 printk messages dropped ** [ 586.324562][T11292] Bluetooth: hci7: failed to register connection device [ 586.342831][T13267] CPU: 1 UID: 0 PID: 13267 Comm: kworker/u9:12 Not tainted syzkaller #0 PREEMPT(full) [ 586.342857][T13267] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 [ 586.342870][T13267] Workqueue: hci4 hci_rx_work [ 586.342904][T13267] Call Trace: [ 586.342913][T13267] [ 586.342921][T13267] dump_stack_lvl+0x189/0x250 [ 586.342944][T13267] ? __pfx_dump_stack_lvl+0x10/0x10 [ 586.342962][T13267] ? __pfx__printk+0x10/0x10 [ 586.342992][T13267] ? kernfs_path_from_node+0x250/0x290 [ 586.343015][T13267] ? kernfs_path_from_node+0x2f/0x290 [ 586.343042][T13267] sysfs_create_dir_ns+0x259/0x280 [ 586.343068][T13267] ? __pfx_sysfs_create_dir_ns+0x10/0x10 [ 586.343094][T13267] ? do_raw_spin_unlock+0x122/0x240 [ 586.343118][T13267] kobject_add_internal+0x6ab/0xcc0 ** 40 printk messages dropped ** [ 586.380549][T13267] Bluetooth: hci4: failed to register connection device [ 586.383410][T11292] CPU: 0 UID: 0 PID: 11292 Comm: kworker/u9:10 Not tainted syzkaller #0 PREEMPT(full) [ 586.383433][T11292] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 [ 586.383446][T11292] Workqueue: hci6 hci_rx_work [ 586.383478][T11292] Call Trace: [ 586.383486][T11292] [ 586.383494][T11292] dump_stack_lvl+0x189/0x250 [ 586.383516][T11292] ? __pfx_dump_stack_lvl+0x10/0x10 [ 586.383534][T11292] ? __pfx__printk+0x10/0x10 [ 586.383564][T11292] ? kernfs_path_from_node+0x250/0x290 [ 586.383587][T11292] ? kernfs_path_from_node+0x2f/0x290 ** 45 printk messages dropped ** [ 586.436530][T13267] CPU: 1 UID: 0 PID: 13267 Comm: kworker/u9:12 Not tainted syzkaller #0 PREEMPT(full) ** 52 printk messages dropped ** [ 586.440796][T11292] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci4/hci4:0' [ 586.452211][T13267] Bluetooth: hci5: failed to register connection device [ 586.462644][T11292] CPU: 0 UID: 0 PID: 11292 Comm: kworker/u9:10 Not tainted syzkaller #0 PREEMPT(full) [ 586.462668][T11292] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 [ 586.462681][T11292] Workqueue: hci4 hci_rx_work [ 586.462708][T11292] Call Trace: [ 586.462716][T11292] [ 586.462724][T11292] dump_stack_lvl+0x189/0x250 [ 586.462747][T11292] ? __pfx_dump_stack_lvl+0x10/0x10 [ 586.462765][T11292] ? __pfx__printk+0x10/0x10 [ 586.462796][T11292] ? kernfs_path_from_node+0x250/0x290 [ 586.462818][T11292] ? kernfs_path_from_node+0x2f/0x290 [ 586.462845][T11292] sysfs_create_dir_ns+0x259/0x280 [ 586.462871][T11292] ? __pfx_sysfs_create_dir_ns+0x10/0x10 [ 586.462896][T11292] ? do_raw_spin_unlock+0x122/0x240 [ 586.462920][T11292] kobject_add_internal+0x6ab/0xcc0 [ 586.462947][T11292] kobject_add+0x155/0x220 [ 586.462969][T11292] ? __pfx_kobject_add+0x10/0x10 [ 586.462996][T11292] ? _raw_spin_unlock+0x28/0x50 [ 586.463021][T11292] ? get_device_parent+0x366/0x3a0 [ 586.463045][T11292] device_add+0x408/0xb80 [ 586.463067][T11292] hci_conn_add_sysfs+0xd5/0x210 [ 586.463094][T11292] le_conn_complete_evt+0xf1d/0x1420 [ 586.463122][T11292] ? __pfx_le_conn_complete_evt+0x10/0x10 ** 40 printk messages dropped ** [ 586.532465][T13267] ? __pfx__printk+0x10/0x10 ** 45 printk messages dropped ** [ 586.576436][T11292] Bluetooth: hci6: command 0x2016 tx timeout ** 1 printk messages dropped ** [ 586.583576][T11292] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci6/hci6:0' [ 586.595234][T13267] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci5/hci5:0' [ 586.598415][T11292] CPU: 0 UID: 0 PID: 11292 Comm: kworker/u9:10 Not tainted syzkaller #0 PREEMPT(full) [ 586.598437][T11292] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 [ 586.598447][T11292] Workqueue: hci6 hci_rx_work [ 586.598475][T11292] Call Trace: [ 586.598484][T11292] [ 586.598492][T11292] dump_stack_lvl+0x189/0x250 [ 586.598516][T11292] ? __pfx_dump_stack_lvl+0x10/0x10 [ 586.598534][T11292] ? __pfx__printk+0x10/0x10 [ 586.598564][T11292] ? kernfs_path_from_node+0x250/0x290 [ 586.598587][T11292] ? kernfs_path_from_node+0x2f/0x290 [ 586.598614][T11292] sysfs_create_dir_ns+0x259/0x280 [ 586.598641][T11292] ? __pfx_sysfs_create_dir_ns+0x10/0x10 [ 586.598666][T11292] ? do_raw_spin_unlock+0x122/0x240 [ 586.598691][T11292] kobject_add_internal+0x6ab/0xcc0 [ 586.598719][T11292] kobject_add+0x155/0x220 [ 586.598742][T11292] ? __pfx_kobject_add+0x10/0x10 ** 38 printk messages dropped ** [ 586.603834][T13267] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 ** 52 printk messages dropped ** [ 586.628778][T13267] Bluetooth: hci5: failed to register connection device [ 586.767358][T11292] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci4/hci4:0' [ 586.825854][T13267] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci6/hci6:0' [ 586.828568][T11292] CPU: 0 UID: 0 PID: 11292 Comm: kworker/u9:10 Not tainted syzkaller #0 PREEMPT(full) [ 586.828594][T11292] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 [ 586.828607][T11292] Workqueue: hci4 hci_rx_work [ 586.828635][T11292] Call Trace: [ 586.828643][T11292] [ 586.828650][T11292] dump_stack_lvl+0x189/0x250 [ 586.828673][T11292] ? __pfx_dump_stack_lvl+0x10/0x10 [ 586.828690][T11292] ? __pfx__printk+0x10/0x10 [ 586.828720][T11292] ? kernfs_path_from_node+0x250/0x290 [ 586.828743][T11292] ? kernfs_path_from_node+0x2f/0x290 [ 586.828780][T11292] sysfs_create_dir_ns+0x259/0x280 [ 586.828808][T11292] ? __pfx_sysfs_create_dir_ns+0x10/0x10 [ 586.828833][T11292] ? do_raw_spin_unlock+0x122/0x240 ** 41 printk messages dropped ** [ 586.831384][T13267] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 ** 52 printk messages dropped ** [ 586.864771][T11292] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci4/hci4:0' [ 586.873671][T13267] Bluetooth: hci6: failed to register connection device [ 586.876955][T11292] CPU: 0 UID: 0 PID: 11292 Comm: kworker/u9:10 Not tainted syzkaller #0 PREEMPT(full) [ 586.876977][T11292] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 [ 586.876988][T11292] Workqueue: hci4 hci_rx_work [ 586.877015][T11292] Call Trace: [ 586.877022][T11292] [ 586.877028][T11292] dump_stack_lvl+0x189/0x250 [ 586.877048][T11292] ? __pfx_dump_stack_lvl+0x10/0x10 [ 586.877063][T11292] ? __pfx__printk+0x10/0x10 [ 586.877089][T11292] ? kernfs_path_from_node+0x250/0x290 [ 586.877117][T11292] ? kernfs_path_from_node+0x2f/0x290 [ 586.877141][T11292] sysfs_create_dir_ns+0x259/0x280 [ 586.877163][T11292] ? __pfx_sysfs_create_dir_ns+0x10/0x10 ** 2 printk messages dropped ** [ 586.877228][T11292] kobject_add+0x155/0x220 ** 40 printk messages dropped ** [ 586.916990][T13267] CPU: 1 UID: 0 PID: 13267 Comm: kworker/u9:12 Not tainted syzkaller #0 PREEMPT(full) ** 52 printk messages dropped ** [ 586.955083][T11292] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci4/hci4:0' [ 586.958525][T13267] Bluetooth: hci7: failed to register connection device [ 586.961628][T11292] CPU: 0 UID: 0 PID: 11292 Comm: kworker/u9:10 Not tainted syzkaller #0 PREEMPT(full) [ 586.961651][T11292] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 [ 586.961663][T11292] Workqueue: hci4 hci_rx_work [ 586.961690][T11292] Call Trace: [ 586.961699][T11292] [ 586.961707][T11292] dump_stack_lvl+0x189/0x250 [ 586.961729][T11292] ? __pfx_dump_stack_lvl+0x10/0x10 [ 586.961746][T11292] ? __pfx__printk+0x10/0x10 [ 586.961777][T11292] ? kernfs_path_from_node+0x250/0x290 [ 586.961800][T11292] ? kernfs_path_from_node+0x2f/0x290 [ 586.961827][T11292] sysfs_create_dir_ns+0x259/0x280 [ 586.961853][T11292] ? __pfx_sysfs_create_dir_ns+0x10/0x10 [ 586.961879][T11292] ? do_raw_spin_unlock+0x122/0x240 [ 586.961904][T11292] kobject_add_internal+0x6ab/0xcc0 ** 41 printk messages dropped ** [ 587.016116][T13267] CPU: 1 UID: 0 PID: 13267 Comm: kworker/u9:12 Not tainted syzkaller #0 PREEMPT(full) ** 52 printk messages dropped ** [ 587.050118][T11292] Bluetooth: hci4: command 0x2016 tx timeout ** 1 printk messages dropped ** [ 587.090180][T13267] Bluetooth: hci5: failed to register connection device [ 587.095238][T11292] CPU: 0 UID: 0 PID: 11292 Comm: kworker/u9:10 Not tainted syzkaller #0 PREEMPT(full) [ 587.095261][T11292] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 [ 587.095275][T11292] Workqueue: hci7 hci_rx_work [ 587.095301][T11292] Call Trace: [ 587.095310][T11292] [ 587.095318][T11292] dump_stack_lvl+0x189/0x250 [ 587.095341][T11292] ? __pfx_dump_stack_lvl+0x10/0x10 [ 587.095358][T11292] ? __pfx__printk+0x10/0x10 [ 587.095389][T11292] ? kernfs_path_from_node+0x250/0x290 [ 587.095417][T11292] ? kernfs_path_from_node+0x2f/0x290 [ 587.095444][T11292] sysfs_create_dir_ns+0x259/0x280 [ 587.095470][T11292] ? __pfx_sysfs_create_dir_ns+0x10/0x10 [ 587.095496][T11292] ? do_raw_spin_unlock+0x122/0x240 [ 587.095521][T11292] kobject_add_internal+0x6ab/0xcc0 [ 587.095548][T11292] kobject_add+0x155/0x220 [ 587.095571][T11292] ? __pfx_kobject_add+0x10/0x10 [ 587.095597][T11292] ? _raw_spin_unlock+0x28/0x50 [ 587.095622][T11292] ? get_device_parent+0x366/0x3a0 [ 587.095646][T11292] device_add+0x408/0xb80 [ 587.095670][T11292] hci_conn_add_sysfs+0xd5/0x210 [ 587.095696][T11292] le_conn_complete_evt+0xf1d/0x1420 [ 587.095726][T11292] ? __pfx_le_conn_complete_evt+0x10/0x10 [ 587.095743][T11292] ? __mutex_unlock_slowpath+0x1a1/0x730 [ 587.095774][T11292] ? __pfx___mutex_unlock_slowpath+0x10/0x10 [ 587.095796][T11292] ? skb_pull_data+0xfb/0x200 ** 30 printk messages dropped ** [ 587.212695][T13267] CPU: 1 UID: 0 PID: 13267 Comm: kworker/u9:12 Not tainted syzkaller #0 PREEMPT(full) ** 53 printk messages dropped ** [ 587.249805][T13267] Bluetooth: hci4: failed to register connection device [ 587.252364][T11292] CPU: 0 UID: 0 PID: 11292 Comm: kworker/u9:10 Not tainted syzkaller #0 PREEMPT(full) [ 587.252387][T11292] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 ** 52 printk messages dropped ** [ 587.296756][T11292] Bluetooth: hci6: failed to register connection device [ 587.305492][T13267] CPU: 1 UID: 0 PID: 13267 Comm: kworker/u9:12 Not tainted syzkaller #0 PREEMPT(full) [ 587.305517][T13267] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 [ 587.305529][T13267] Workqueue: hci5 hci_rx_work [ 587.305557][T13267] Call Trace: [ 587.305565][T13267] [ 587.305573][T13267] dump_stack_lvl+0x189/0x250 [ 587.305596][T13267] ? __pfx_dump_stack_lvl+0x10/0x10 [ 587.305613][T13267] ? __pfx__printk+0x10/0x10 [ 587.305643][T13267] ? kernfs_path_from_node+0x250/0x290 ** 45 printk messages dropped ** [ 587.320237][T13267] Bluetooth: hci5: failed to register connection device [ 587.330270][T11292] CPU: 0 UID: 0 PID: 11292 Comm: kworker/u9:10 Not tainted syzkaller #0 PREEMPT(full) [ 587.330293][T11292] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 [ 587.330306][T11292] Workqueue: hci7 hci_rx_work [ 587.330333][T11292] Call Trace: [ 587.330342][T11292] [ 587.330350][T11292] dump_stack_lvl+0x189/0x250 [ 587.330372][T11292] ? __pfx_dump_stack_lvl+0x10/0x10 ** 48 printk messages dropped ** [ 587.425840][T11292] Bluetooth: hci7: failed to register connection device [ 587.430555][T13267] CPU: 1 UID: 0 PID: 13267 Comm: kworker/u9:12 Not tainted syzkaller #0 PREEMPT(full) [ 587.430577][T13267] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 [ 587.430590][T13267] Workqueue: hci5 hci_rx_work [ 587.430619][T13267] Call Trace: [ 587.430627][T13267] [ 587.430635][T13267] dump_stack_lvl+0x189/0x250 [ 587.430658][T13267] ? __pfx_dump_stack_lvl+0x10/0x10 [ 587.430675][T13267] ? __pfx__printk+0x10/0x10 [ 587.430706][T13267] ? kernfs_path_from_node+0x250/0x290 [ 587.430729][T13267] ? kernfs_path_from_node+0x2f/0x290 [ 587.430756][T13267] sysfs_create_dir_ns+0x259/0x280 [ 587.430781][T13267] ? __pfx_sysfs_create_dir_ns+0x10/0x10 [ 587.430806][T13267] ? do_raw_spin_unlock+0x122/0x240 [ 587.430831][T13267] kobject_add_internal+0x6ab/0xcc0 [ 587.430857][T13267] kobject_add+0x155/0x220 [ 587.430879][T13267] ? __pfx_kobject_add+0x10/0x10 [ 587.430905][T13267] ? _raw_spin_unlock+0x28/0x50 [ 587.430930][T13267] ? get_device_parent+0x366/0x3a0 [ 587.430954][T13267] device_add+0x408/0xb80 [ 587.430977][T13267] hci_conn_add_sysfs+0xd5/0x210 [ 587.431003][T13267] le_conn_complete_evt+0xf1d/0x1420 [ 587.431040][T13267] ? __pfx_le_conn_complete_evt+0x10/0x10 [ 587.431057][T13267] ? __mutex_unlock_slowpath+0x1a1/0x730 ** 34 printk messages dropped ** [ 587.490369][T11292] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 ** 52 printk messages dropped ** [ 587.494780][T13267] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 [ 587.494791][T13267] Workqueue: hci7 hci_rx_work [ 587.494814][T13267] Call Trace: [ 587.494822][T13267] [ 587.494830][T13267] dump_stack_lvl+0x189/0x250 [ 587.494851][T13267] ? __pfx_dump_stack_lvl+0x10/0x10 [ 587.494868][T13267] ? __pfx__printk+0x10/0x10 [ 587.494896][T13267] ? kernfs_path_from_node+0x250/0x290 [ 587.494918][T13267] ? kernfs_path_from_node+0x2f/0x290 [ 587.494945][T13267] sysfs_create_dir_ns+0x259/0x280 [ 587.494971][T13267] ? __pfx_sysfs_create_dir_ns+0x10/0x10 [ 587.494996][T13267] ? do_raw_spin_unlock+0x122/0x240 [ 587.495027][T13267] kobject_add_internal+0x6ab/0xcc0 [ 587.495053][T13267] kobject_add+0x155/0x220 ** 39 printk messages dropped ** [ 587.519792][T13267] Bluetooth: hci7: failed to register connection device ** 2 printk messages dropped ** [ 587.640948][T11292] CPU: 0 UID: 0 PID: 11292 Comm: kworker/u9:10 Not tainted syzkaller #0 PREEMPT(full) [ 587.640972][T11292] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 [ 587.640985][T11292] Workqueue: hci6 hci_rx_work [ 587.641012][T11292] Call Trace: [ 587.641020][T11292] [ 587.641029][T11292] dump_stack_lvl+0x189/0x250 [ 587.641052][T11292] ? __pfx_dump_stack_lvl+0x10/0x10 [ 587.641070][T11292] ? __pfx__printk+0x10/0x10 [ 587.641099][T11292] ? kernfs_path_from_node+0x250/0x290 [ 587.641122][T11292] ? kernfs_path_from_node+0x2f/0x290 [ 587.641150][T11292] sysfs_create_dir_ns+0x259/0x280 [ 587.641176][T11292] ? __pfx_sysfs_create_dir_ns+0x10/0x10 [ 587.641201][T11292] ? do_raw_spin_unlock+0x122/0x240 [ 587.641226][T11292] kobject_add_internal+0x6ab/0xcc0 [ 587.641253][T11292] kobject_add+0x155/0x220 [ 587.641275][T11292] ? __pfx_kobject_add+0x10/0x10 [ 587.641301][T11292] ? _raw_spin_unlock+0x28/0x50 [ 587.641326][T11292] ? get_device_parent+0x366/0x3a0 ** 40 printk messages dropped ** [ 587.650216][T13267] dump_stack_lvl+0x189/0x250 ** 1 printk messages dropped ** [ 587.650256][T13267] ? __pfx__printk+0x10/0x10 ** 1 printk messages dropped ** [ 587.650309][T13267] ? kernfs_path_from_node+0x2f/0x290 [ 587.650335][T13267] sysfs_create_dir_ns+0x259/0x280 [ 587.650362][T13267] ? __pfx_sysfs_create_dir_ns+0x10/0x10 [ 587.650387][T13267] ? do_raw_spin_unlock+0x122/0x240 [ 587.650412][T13267] kobject_add_internal+0x6ab/0xcc0 [ 587.650438][T13267] kobject_add+0x155/0x220 [ 587.650461][T13267] ? __pfx_kobject_add+0x10/0x10 [ 587.650487][T13267] ? _raw_spin_unlock+0x28/0x50 [ 587.650513][T13267] ? get_device_parent+0x366/0x3a0 [ 587.650536][T13267] device_add+0x408/0xb80 ** 45 printk messages dropped ** [ 587.762564][T11292] ? kernfs_path_from_node+0x250/0x290 ** 49 printk messages dropped ** [ 587.813198][T13267] Call Trace: ** 2 printk messages dropped ** [ 587.813236][T13267] ? __pfx_dump_stack_lvl+0x10/0x10 [ 587.813253][T13267] ? __pfx__printk+0x10/0x10 [ 587.813284][T13267] ? kernfs_path_from_node+0x250/0x290 [ 587.813308][T13267] ? kernfs_path_from_node+0x2f/0x290 [ 587.813335][T13267] sysfs_create_dir_ns+0x259/0x280 [ 587.813361][T13267] ? __pfx_sysfs_create_dir_ns+0x10/0x10 [ 587.813384][T13267] ? do_raw_spin_unlock+0x122/0x240 [ 587.813407][T13267] kobject_add_internal+0x6ab/0xcc0 [ 587.813433][T13267] kobject_add+0x155/0x220 [ 587.813456][T13267] ? __pfx_kobject_add+0x10/0x10 [ 587.813482][T13267] ? _raw_spin_unlock+0x28/0x50 [ 587.813506][T13267] ? get_device_parent+0x366/0x3a0 [ 587.813534][T13267] device_add+0x408/0xb80 [ 587.813558][T13267] hci_conn_add_sysfs+0xd5/0x210 [ 587.813586][T13267] le_conn_complete_evt+0xf1d/0x1420 [ 587.813614][T13267] ? __pfx_le_conn_complete_evt+0x10/0x10 [ 587.813632][T13267] ? __mutex_unlock_slowpath+0x1a1/0x730 [ 587.813663][T13267] ? __pfx___mutex_unlock_slowpath+0x10/0x10 [ 587.813685][T13267] ? skb_pull_data+0xfb/0x200 [ 587.813708][T13267] hci_le_enh_conn_complete_evt+0x189/0x4a0 [ 587.813729][T13267] ? __pfx_hci_le_enh_conn_complete_evt+0x10/0x10 [ 587.813753][T13267] hci_event_packet+0x78f/0x1260 [ 587.813780][T13267] ? __pfx_hci_le_meta_evt+0x10/0x10 [ 587.813801][T13267] ? __pfx_hci_event_packet+0x10/0x10 [ 587.813827][T13267] ? kcov_remote_start+0x18e/0x7f0 [ 587.813847][T13267] ? lockdep_hardirqs_on+0x98/0x140 ** 31 printk messages dropped ** [ 587.877921][T11292] ? kernfs_path_from_node+0x250/0x290 ** 1 printk messages dropped ** [ 587.877971][T11292] sysfs_create_dir_ns+0x259/0x280 ** 1 printk messages dropped ** [ 587.878023][T11292] ? do_raw_spin_unlock+0x122/0x240 ** 49 printk messages dropped ** [ 587.951702][T13267] ? __pfx_dump_stack_lvl+0x10/0x10 [ 587.951720][T13267] ? __pfx__printk+0x10/0x10 [ 587.951750][T13267] ? kernfs_path_from_node+0x250/0x290 [ 587.951773][T13267] ? kernfs_path_from_node+0x2f/0x290 [ 587.951800][T13267] sysfs_create_dir_ns+0x259/0x280 [ 587.951826][T13267] ? __pfx_sysfs_create_dir_ns+0x10/0x10 [ 587.951852][T13267] ? do_raw_spin_unlock+0x122/0x240 [ 587.951877][T13267] kobject_add_internal+0x6ab/0xcc0 [ 587.951904][T13267] kobject_add+0x155/0x220 ** 46 printk messages dropped ** [ 587.954123][ T5147] ? kernfs_path_from_node+0x250/0x290 ** 49 printk messages dropped ** [ 588.076963][T13267] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 [ 588.076976][T13267] Workqueue: hci6 hci_rx_work [ 588.077004][T13267] Call Trace: [ 588.077013][T13267] [ 588.077020][T13267] dump_stack_lvl+0x189/0x250 [ 588.077044][T13267] ? __pfx_dump_stack_lvl+0x10/0x10 [ 588.077061][T13267] ? __pfx__printk+0x10/0x10 [ 588.077092][T13267] ? kernfs_path_from_node+0x250/0x290 [ 588.077114][T13267] ? kernfs_path_from_node+0x2f/0x290 [ 588.077141][T13267] sysfs_create_dir_ns+0x259/0x280 [ 588.077167][T13267] ? __pfx_sysfs_create_dir_ns+0x10/0x10 [ 588.077193][T13267] ? do_raw_spin_unlock+0x122/0x240 [ 588.077217][T13267] kobject_add_internal+0x6ab/0xcc0 [ 588.077244][T13267] kobject_add+0x155/0x220 [ 588.077267][T13267] ? __pfx_kobject_add+0x10/0x10 [ 588.077293][T13267] ? _raw_spin_unlock+0x28/0x50 [ 588.077317][T13267] ? get_device_parent+0x366/0x3a0 [ 588.077341][T13267] device_add+0x408/0xb80 [ 588.077365][T13267] hci_conn_add_sysfs+0xd5/0x210 [ 588.077391][T13267] le_conn_complete_evt+0xf1d/0x1420 [ 588.077420][T13267] ? __pfx_le_conn_complete_evt+0x10/0x10 [ 588.077437][T13267] ? __mutex_unlock_slowpath+0x1a1/0x730 [ 588.077468][T13267] ? __pfx___mutex_unlock_slowpath+0x10/0x10 [ 588.077491][T13267] ? skb_pull_data+0xfb/0x200 [ 588.077533][T13267] hci_le_enh_conn_complete_evt+0x189/0x4a0 [ 588.077554][T13267] ? __pfx_hci_le_enh_conn_complete_evt+0x10/0x10 [ 588.077578][T13267] hci_event_packet+0x78f/0x1260 [ 588.077605][T13267] ? __pfx_hci_le_meta_evt+0x10/0x10 [ 588.077626][T13267] ? __pfx_hci_event_packet+0x10/0x10 ** 34 printk messages dropped ** [ 588.093893][ T5147] ? __pfx_sysfs_create_dir_ns+0x10/0x10 [ 588.093918][ T5147] ? do_raw_spin_unlock+0x122/0x240 [ 588.093943][ T5147] kobject_add_internal+0x6ab/0xcc0 [ 588.093970][ T5147] kobject_add+0x155/0x220 ** 48 printk messages dropped ** [ 588.169261][T13267] ? __pfx__printk+0x10/0x10 [ 588.169291][T13267] ? kernfs_path_from_node+0x250/0x290 [ 588.169314][T13267] ? kernfs_path_from_node+0x2f/0x290 [ 588.169342][T13267] sysfs_create_dir_ns+0x259/0x280 [ 588.169368][T13267] ? __pfx_sysfs_create_dir_ns+0x10/0x10 [ 588.169393][T13267] ? do_raw_spin_unlock+0x122/0x240 [ 588.169418][T13267] kobject_add_internal+0x6ab/0xcc0 [ 588.169445][T13267] kobject_add+0x155/0x220 ** 1 printk messages dropped ** [ 588.169493][T13267] ? _raw_spin_unlock+0x28/0x50 ** 45 printk messages dropped ** [ 588.193004][ T5147] ? __pfx__printk+0x10/0x10 [ 588.193034][ T5147] ? kernfs_path_from_node+0x250/0x290 [ 588.193058][ T5147] ? kernfs_path_from_node+0x2f/0x290 [ 588.193085][ T5147] sysfs_create_dir_ns+0x259/0x280 [ 588.193111][ T5147] ? __pfx_sysfs_create_dir_ns+0x10/0x10 [ 588.193136][ T5147] ? do_raw_spin_unlock+0x122/0x240 [ 588.193161][ T5147] kobject_add_internal+0x6ab/0xcc0 [ 588.193187][ T5147] kobject_add+0x155/0x220 ** 47 printk messages dropped ** [ 588.229974][T13267] ? __pfx__printk+0x10/0x10 [ 588.230004][T13267] ? kernfs_path_from_node+0x250/0x290 [ 588.230027][T13267] ? kernfs_path_from_node+0x2f/0x290 ** 2 printk messages dropped ** [ 588.230106][T13267] ? do_raw_spin_unlock+0x122/0x240 ** 46 printk messages dropped ** [ 588.376115][T13267] Workqueue: hci6 hci_rx_work [ 588.376142][T13267] Call Trace: [ 588.376150][T13267] [ 588.376157][T13267] dump_stack_lvl+0x189/0x250 [ 588.376184][T13267] ? __pfx_dump_stack_lvl+0x10/0x10 [ 588.376199][T13267] ? __pfx__printk+0x10/0x10 [ 588.376228][T13267] ? kernfs_path_from_node+0x250/0x290 [ 588.376251][T13267] ? kernfs_path_from_node+0x2f/0x290 [ 588.376279][T13267] sysfs_create_dir_ns+0x259/0x280 [ 588.376305][T13267] ? __pfx_sysfs_create_dir_ns+0x10/0x10 [ 588.376331][T13267] ? do_raw_spin_unlock+0x122/0x240 [ 588.376357][T13267] kobject_add_internal+0x6ab/0xcc0 [ 588.376383][T13267] kobject_add+0x155/0x220 [ 588.376407][T13267] ? __pfx_kobject_add+0x10/0x10 [ 588.376434][T13267] ? _raw_spin_unlock+0x28/0x50 [ 588.376459][T13267] ? get_device_parent+0x366/0x3a0 [ 588.376483][T13267] device_add+0x408/0xb80 [ 588.376506][T13267] hci_conn_add_sysfs+0xd5/0x210 [ 588.376533][T13267] le_conn_complete_evt+0xf1d/0x1420 [ 588.376563][T13267] ? __pfx_le_conn_complete_evt+0x10/0x10 [ 588.376581][T13267] ? __mutex_unlock_slowpath+0x1a1/0x730 ** 37 printk messages dropped ** [ 588.397500][ T5147] ? __pfx__printk+0x10/0x10 [ 588.397530][ T5147] ? kernfs_path_from_node+0x250/0x290 [ 588.397554][ T5147] ? kernfs_path_from_node+0x2f/0x290 [ 588.397581][ T5147] sysfs_create_dir_ns+0x259/0x280 [ 588.397606][ T5147] ? __pfx_sysfs_create_dir_ns+0x10/0x10 [ 588.397632][ T5147] ? do_raw_spin_unlock+0x122/0x240 [ 588.397657][ T5147] kobject_add_internal+0x6ab/0xcc0 [ 588.397684][ T5147] kobject_add+0x155/0x220 [ 588.397705][ T5147] ? __pfx_kobject_add+0x10/0x10 [ 588.397729][ T5147] ? _raw_spin_unlock+0x28/0x50 [ 588.397754][ T5147] ? get_device_parent+0x366/0x3a0 [ 588.397778][ T5147] device_add+0x408/0xb80 [ 588.397801][ T5147] hci_conn_add_sysfs+0xd5/0x210 [ 588.397828][ T5147] le_conn_complete_evt+0xf1d/0x1420 [ 588.397858][ T5147] ? __pfx_le_conn_complete_evt+0x10/0x10 [ 588.397876][ T5147] ? __mutex_unlock_slowpath+0x1a1/0x730 [ 588.397906][ T5147] ? __pfx___mutex_unlock_slowpath+0x10/0x10 [ 588.397929][ T5147] ? skb_pull_data+0xfb/0x200 [ 588.397960][ T5147] hci_le_enh_conn_complete_evt+0x189/0x4a0 ** 41 printk messages dropped ** [ 588.501148][T13267] sysfs_create_dir_ns+0x259/0x280 ** 6 printk messages dropped ** [ 588.501326][T13267] ? get_device_parent+0x366/0x3a0 ** 43 printk messages dropped ** [ 588.517965][ T5147] ? __pfx_dump_stack_lvl+0x10/0x10 ** 2 printk messages dropped ** [ 588.518035][ T5147] ? kernfs_path_from_node+0x2f/0x290 ** 1 printk messages dropped ** [ 588.518088][ T5147] ? __pfx_sysfs_create_dir_ns+0x10/0x10 [ 588.518114][ T5147] ? do_raw_spin_unlock+0x122/0x240 [ 588.518139][ T5147] kobject_add_internal+0x6ab/0xcc0 [ 588.518165][ T5147] kobject_add+0x155/0x220 [ 588.518187][ T5147] ? __pfx_kobject_add+0x10/0x10 [ 588.518214][ T5147] ? _raw_spin_unlock+0x28/0x50 [ 588.518237][ T5147] ? get_device_parent+0x366/0x3a0 [ 588.518261][ T5147] device_add+0x408/0xb80 [ 588.518284][ T5147] hci_conn_add_sysfs+0xd5/0x210 [ 588.518310][ T5147] le_conn_complete_evt+0xf1d/0x1420 [ 588.518339][ T5147] ? __pfx_le_conn_complete_evt+0x10/0x10 [ 588.518356][ T5147] ? __mutex_unlock_slowpath+0x1a1/0x730 [ 588.518387][ T5147] ? __pfx___mutex_unlock_slowpath+0x10/0x10 [ 588.518409][ T5147] ? skb_pull_data+0xfb/0x200 [ 588.518432][ T5147] hci_le_enh_conn_complete_evt+0x189/0x4a0 [ 588.518454][ T5147] ? __pfx_hci_le_enh_conn_complete_evt+0x10/0x10 [ 588.518477][ T5147] hci_event_packet+0x78f/0x1260 [ 588.518504][ T5147] ? __pfx_hci_le_meta_evt+0x10/0x10 [ 588.518525][ T5147] ? __pfx_hci_event_packet+0x10/0x10 [ 588.518551][ T5147] ? kcov_remote_start+0x18e/0x7f0 [ 588.518570][ T5147] ? lockdep_hardirqs_on+0x98/0x140 [ 588.518595][ T5147] ? hci_send_to_monitor+0xe2/0x590 [ 588.518619][ T5147] hci_rx_work+0x3ee/0x1060 [ 588.518652][ T5147] ? process_one_work+0x868/0x15a0 [ 588.518674][ T5147] process_one_work+0x93a/0x15a0 ** 30 printk messages dropped ** [ 588.526549][T13267] kobject_add_internal+0x6ab/0xcc0 ** 50 printk messages dropped ** [ 588.749365][T13267] ? __pfx_dump_stack_lvl+0x10/0x10 [ 588.749382][T13267] ? __pfx__printk+0x10/0x10 ** 1 printk messages dropped ** [ 588.749436][T13267] ? kernfs_path_from_node+0x2f/0x290 [ 588.749463][T13267] sysfs_create_dir_ns+0x259/0x280 [ 588.749489][T13267] ? __pfx_sysfs_create_dir_ns+0x10/0x10 [ 588.749515][T13267] ? do_raw_spin_unlock+0x122/0x240 [ 588.749540][T13267] kobject_add_internal+0x6ab/0xcc0 [ 588.749566][T13267] kobject_add+0x155/0x220 [ 588.749589][T13267] ? __pfx_kobject_add+0x10/0x10 ** 50 printk messages dropped ** [ 588.754076][ T5147] kobject_add_internal+0x6ab/0xcc0 [ 588.754102][ T5147] kobject_add+0x155/0x220 ** 1 printk messages dropped ** [ 588.754151][ T5147] ? _raw_spin_unlock+0x28/0x50 ** 1 printk messages dropped ** [ 588.754198][ T5147] device_add+0x408/0xb80 ** 48 printk messages dropped ** [ 588.874748][T13267] sysfs_create_dir_ns+0x259/0x280 [ 588.874773][T13267] ? __pfx_sysfs_create_dir_ns+0x10/0x10 ** 1 printk messages dropped ** [ 588.874824][T13267] kobject_add_internal+0x6ab/0xcc0 [ 588.874850][T13267] kobject_add+0x155/0x220 [ 588.874879][T13267] ? __pfx_kobject_add+0x10/0x10 [ 588.874906][T13267] ? _raw_spin_unlock+0x28/0x50 [ 588.874931][T13267] ? get_device_parent+0x366/0x3a0 [ 588.874954][T13267] device_add+0x408/0xb80 [ 588.874977][T13267] hci_conn_add_sysfs+0xd5/0x210 [ 588.875004][T13267] le_conn_complete_evt+0xf1d/0x1420 [ 588.875034][T13267] ? __pfx_le_conn_complete_evt+0x10/0x10 [ 588.875051][T13267] ? __mutex_unlock_slowpath+0x1a1/0x730 [ 588.875082][T13267] ? __pfx___mutex_unlock_slowpath+0x10/0x10 [ 588.875104][T13267] ? skb_pull_data+0xfb/0x200 [ 588.875128][T13267] hci_le_enh_conn_complete_evt+0x189/0x4a0 [ 588.875149][T13267] ? __pfx_hci_le_enh_conn_complete_evt+0x10/0x10 2025/12/02 02:19:13 executed programs: 4382 [ 588.875172][T13267] hci_event_packet+0x78f/0x1260 [ 588.875200][T13267] ? __pfx_hci_le_meta_evt+0x10/0x10 [ 588.875221][T13267] ? __pfx_hci_event_packet+0x10/0x10 [ 588.875247][T13267] ? kcov_remote_start+0x18e/0x7f0 ** 40 printk messages dropped ** [ 588.880322][ T5147] device_add+0x408/0xb80 ** 3 printk messages dropped ** [ 588.880417][ T5147] ? __mutex_unlock_slowpath+0x1a1/0x730 [ 588.880447][ T5147] ? __pfx___mutex_unlock_slowpath+0x10/0x10 ** 48 printk messages dropped ** [ 589.022655][T13267] ? __pfx_kobject_add+0x10/0x10 ** 1 printk messages dropped ** [ 589.022706][T13267] ? get_device_parent+0x366/0x3a0 ** 4 printk messages dropped ** [ 589.022833][T13267] ? __mutex_unlock_slowpath+0x1a1/0x730 ** 48 printk messages dropped ** [ 589.027104][ T5147] device_add+0x408/0xb80 [ 589.027127][ T5147] hci_conn_add_sysfs+0xd5/0x210 [ 589.027153][ T5147] le_conn_complete_evt+0xf1d/0x1420 [ 589.027182][ T5147] ? __pfx_le_conn_complete_evt+0x10/0x10 [ 589.027200][ T5147] ? __mutex_unlock_slowpath+0x1a1/0x730 [ 589.027230][ T5147] ? __pfx___mutex_unlock_slowpath+0x10/0x10 [ 589.027253][ T5147] ? skb_pull_data+0xfb/0x200 [ 589.027276][ T5147] hci_le_enh_conn_complete_evt+0x189/0x4a0 [ 589.027298][ T5147] ? __pfx_hci_le_enh_conn_complete_evt+0x10/0x10 [ 589.027322][ T5147] hci_event_packet+0x78f/0x1260 [ 589.027349][ T5147] ? __pfx_hci_le_meta_evt+0x10/0x10 [ 589.027370][ T5147] ? __pfx_hci_event_packet+0x10/0x10 [ 589.027396][ T5147] ? kcov_remote_start+0x18e/0x7f0 [ 589.027415][ T5147] ? lockdep_hardirqs_on+0x98/0x140 [ 589.027441][ T5147] ? hci_send_to_monitor+0xe2/0x590 [ 589.027464][ T5147] hci_rx_work+0x3ee/0x1060 [ 589.027497][ T5147] ? process_one_work+0x868/0x15a0 [ 589.027519][ T5147] process_one_work+0x93a/0x15a0 [ 589.027563][ T5147] ? __pfx_process_one_work+0x10/0x10 [ 589.027601][ T5147] ? assign_work+0x3a1/0x410 [ 589.027628][ T5147] worker_thread+0x9b0/0xee0 [ 589.027676][ T5147] kthread+0x711/0x8a0 [ 589.027698][ T5147] ? __pfx_worker_thread+0x10/0x10 [ 589.027721][ T5147] ? __pfx_kthread+0x10/0x10 [ 589.027741][ T5147] ? _raw_spin_unlock_irq+0x23/0x50 [ 589.027763][ T5147] ? lockdep_hardirqs_on+0x98/0x140 [ 589.027783][ T5147] ? __pfx_kthread+0x10/0x10 [ 589.027803][ T5147] ret_from_fork+0x599/0xb30 [ 589.027828][ T5147] ? __pfx_ret_from_fork+0x10/0x10 [ 589.027860][ T5147] ? __switch_to_asm+0x39/0x70 [ 589.027877][ T5147] ? __switch_to_asm+0x33/0x70 [ 589.027893][ T5147] ? __pfx_kthread+0x10/0x10 [ 589.027913][ T5147] ret_from_fork_asm+0x1a/0x30 [ 589.027948][ T5147] [ 589.027973][ T5147] kobject: kobject_add_internal failed for hci4:0 with -EEXIST, don't try to register things with the same name in the same directory. [ 589.039785][T13267] Bluetooth: hci5: failed to register connection device [ 589.141449][T13267] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci5/hci5:0' [ 589.142758][ T5147] Bluetooth: hci4: failed to register connection device [ 589.147660][T13267] CPU: 0 UID: 0 PID: 13267 Comm: kworker/u9:12 Not tainted syzkaller #0 PREEMPT(full) [ 589.147680][T13267] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 [ 589.147692][T13267] Workqueue: hci5 hci_rx_work [ 589.147719][T13267] Call Trace: [ 589.147727][T13267] [ 589.147736][T13267] dump_stack_lvl+0x189/0x250 [ 589.147759][T13267] ? __pfx_dump_stack_lvl+0x10/0x10 [ 589.147777][T13267] ? __pfx__printk+0x10/0x10 ** 14 printk messages dropped ** [ 589.148162][T13267] ? __mutex_unlock_slowpath+0x1a1/0x730 ** 1 printk messages dropped ** [ 589.148215][T13267] ? skb_pull_data+0xfb/0x200 [ 589.148239][T13267] hci_le_enh_conn_complete_evt+0x189/0x4a0 ** 49 printk messages dropped ** [ 589.200401][T13267] device_add+0x408/0xb80 [ 589.200425][T13267] hci_conn_add_sysfs+0xd5/0x210 [ 589.200451][T13267] le_conn_complete_evt+0xf1d/0x1420 [ 589.200481][T13267] ? __pfx_le_conn_complete_evt+0x10/0x10 [ 589.200499][T13267] ? __mutex_unlock_slowpath+0x1a1/0x730 ** 1 printk messages dropped ** [ 589.200553][T13267] ? skb_pull_data+0xfb/0x200 [ 589.200577][T13267] hci_le_enh_conn_complete_evt+0x189/0x4a0 ** 50 printk messages dropped ** [ 589.214710][ T5147] ? __pfx_le_conn_complete_evt+0x10/0x10 [ 589.214728][ T5147] ? __mutex_unlock_slowpath+0x1a1/0x730 [ 589.214759][ T5147] ? __pfx___mutex_unlock_slowpath+0x10/0x10 ** 51 printk messages dropped ** [ 589.224883][T13267] ? __mutex_unlock_slowpath+0x1a1/0x730 [ 589.224914][T13267] ? __pfx___mutex_unlock_slowpath+0x10/0x10 ** 1 printk messages dropped ** [ 589.224961][T13267] hci_le_enh_conn_complete_evt+0x189/0x4a0 [ 589.224983][T13267] ? __pfx_hci_le_enh_conn_complete_evt+0x10/0x10 [ 589.225008][T13267] hci_event_packet+0x78f/0x1260 [ 589.225034][T13267] ? __pfx_hci_le_meta_evt+0x10/0x10 [ 589.225056][T13267] ? __pfx_hci_event_packet+0x10/0x10 [ 589.225082][T13267] ? kcov_remote_start+0x18e/0x7f0 [ 589.225101][T13267] ? lockdep_hardirqs_on+0x98/0x140 [ 589.225127][T13267] ? hci_send_to_monitor+0xe2/0x590 [ 589.225150][T13267] hci_rx_work+0x3ee/0x1060 [ 589.225185][T13267] ? process_one_work+0x868/0x15a0 [ 589.225206][T13267] process_one_work+0x93a/0x15a0 [ 589.225250][T13267] ? __pfx_process_one_work+0x10/0x10 [ 589.225282][T13267] ? assign_work+0x3a1/0x410 [ 589.225309][T13267] worker_thread+0x9b0/0xee0 [ 589.225357][T13267] kthread+0x711/0x8a0 [ 589.225379][T13267] ? __pfx_worker_thread+0x10/0x10 ** 46 printk messages dropped ** [ 589.389921][ T5147] ? lockdep_hardirqs_on+0x98/0x140 ** 1 printk messages dropped ** [ 589.389970][ T5147] hci_rx_work+0x3ee/0x1060 ** 5 printk messages dropped ** [ 589.390176][ T5147] kthread+0x711/0x8a0 ** 46 printk messages dropped ** [ 589.462136][T13267] ? lockdep_hardirqs_on+0x98/0x140 [ 589.462162][T13267] ? hci_send_to_monitor+0xe2/0x590 [ 589.462186][T13267] hci_rx_work+0x3ee/0x1060 [ 589.462220][T13267] ? process_one_work+0x868/0x15a0 [ 589.462241][T13267] process_one_work+0x93a/0x15a0 ** 50 printk messages dropped ** [ 589.487215][ T5147] ? lockdep_hardirqs_on+0x98/0x140 [ 589.487240][ T5147] ? hci_send_to_monitor+0xe2/0x590 ** 1 printk messages dropped ** [ 589.487298][ T5147] ? process_one_work+0x868/0x15a0 [ 589.487319][ T5147] process_one_work+0x93a/0x15a0 [ 589.487362][ T5147] ? __pfx_process_one_work+0x10/0x10 [ 589.487393][ T5147] ? assign_work+0x3a1/0x410 [ 589.487420][ T5147] worker_thread+0x9b0/0xee0 [ 589.487467][ T5147] kthread+0x711/0x8a0 [ 589.487489][ T5147] ? __pfx_worker_thread+0x10/0x10 [ 589.487512][ T5147] ? __pfx_kthread+0x10/0x10 [ 589.487532][ T5147] ? _raw_spin_unlock_irq+0x23/0x50 [ 589.487553][ T5147] ? lockdep_hardirqs_on+0x98/0x140 ** 44 printk messages dropped ** [ 589.567079][T13267] ? lockdep_hardirqs_on+0x98/0x140 [ 589.567105][T13267] ? hci_send_to_monitor+0xe2/0x590 [ 589.567129][T13267] hci_rx_work+0x3ee/0x1060 ** 50 printk messages dropped ** [ 589.568767][ T5147] ? lockdep_hardirqs_on+0x98/0x140 [ 589.568793][ T5147] ? hci_send_to_monitor+0xe2/0x590 ** 1 printk messages dropped ** [ 589.568849][ T5147] ? process_one_work+0x868/0x15a0 ** 1 printk messages dropped ** [ 589.568915][ T5147] ? __pfx_process_one_work+0x10/0x10 [ 589.568946][ T5147] ? assign_work+0x3a1/0x410 [ 589.568973][ T5147] worker_thread+0x9b0/0xee0 [ 589.569021][ T5147] kthread+0x711/0x8a0 [ 589.569043][ T5147] ? __pfx_worker_thread+0x10/0x10 [ 589.569065][ T5147] ? __pfx_kthread+0x10/0x10 [ 589.569085][ T5147] ? _raw_spin_unlock_irq+0x23/0x50 [ 589.569106][ T5147] ? lockdep_hardirqs_on+0x98/0x140 [ 589.569127][ T5147] ? __pfx_kthread+0x10/0x10 [ 589.569146][ T5147] ret_from_fork+0x599/0xb30 [ 589.569171][ T5147] ? __pfx_ret_from_fork+0x10/0x10 [ 589.569204][ T5147] ? __switch_to_asm+0x39/0x70 [ 589.569220][ T5147] ? __switch_to_asm+0x33/0x70 [ 589.569237][ T5147] ? __pfx_kthread+0x10/0x10 [ 589.569257][ T5147] ret_from_fork_asm+0x1a/0x30 [ 589.569291][ T5147] [ 589.569316][ T5147] kobject: kobject_add_internal failed for hci4:0 with -EEXIST, don't try to register things with the same name in the same directory. [ 589.580501][T13267] Bluetooth: hci5: failed to register connection device ** 35 printk messages dropped ** [ 589.756765][T13267] ? hci_send_to_monitor+0xe2/0x590 [ 589.756789][T13267] hci_rx_work+0x3ee/0x1060 [ 589.756828][T13267] ? process_one_work+0x868/0x15a0 [ 589.756851][T13267] process_one_work+0x93a/0x15a0 [ 589.756899][T13267] ? __pfx_process_one_work+0x10/0x10 [ 589.756932][T13267] ? assign_work+0x3a1/0x410 [ 589.756961][T13267] worker_thread+0x9b0/0xee0 [ 589.757009][T13267] kthread+0x711/0x8a0 [ 589.757032][T13267] ? __pfx_worker_thread+0x10/0x10 [ 589.757055][T13267] ? __pfx_kthread+0x10/0x10 [ 589.757076][T13267] ? _raw_spin_unlock_irq+0x23/0x50 [ 589.757098][T13267] ? lockdep_hardirqs_on+0x98/0x140 ** 45 printk messages dropped ** [ 589.762172][ T5147] ? __pfx_process_one_work+0x10/0x10 [ 589.762203][ T5147] ? assign_work+0x3a1/0x410 [ 589.762231][ T5147] worker_thread+0x9b0/0xee0 [ 589.762279][ T5147] kthread+0x711/0x8a0 [ 589.762301][ T5147] ? __pfx_worker_thread+0x10/0x10 [ 589.762323][ T5147] ? __pfx_kthread+0x10/0x10 [ 589.762344][ T5147] ? _raw_spin_unlock_irq+0x23/0x50 [ 589.762365][ T5147] ? lockdep_hardirqs_on+0x98/0x140 [ 589.762386][ T5147] ? __pfx_kthread+0x10/0x10 [ 589.762405][ T5147] ret_from_fork+0x599/0xb30 [ 589.762430][ T5147] ? __pfx_ret_from_fork+0x10/0x10 ** 43 printk messages dropped ** [ 589.805542][T13267] ? process_one_work+0x868/0x15a0 [ 589.805563][T13267] process_one_work+0x93a/0x15a0 [ 589.805608][T13267] ? __pfx_process_one_work+0x10/0x10 [ 589.805638][T13267] ? assign_work+0x3a1/0x410 [ 589.805666][T13267] worker_thread+0x9b0/0xee0 [ 589.805714][T13267] kthread+0x711/0x8a0 [ 589.805735][T13267] ? __pfx_worker_thread+0x10/0x10 ** 48 printk messages dropped ** [ 589.862929][ T5147] ? process_one_work+0x868/0x15a0 [ 589.862951][ T5147] process_one_work+0x93a/0x15a0 ** 1 printk messages dropped ** [ 589.863026][ T5147] ? assign_work+0x3a1/0x410 [ 589.863053][ T5147] worker_thread+0x9b0/0xee0 [ 589.863101][ T5147] kthread+0x711/0x8a0 [ 589.863122][ T5147] ? __pfx_worker_thread+0x10/0x10 [ 589.863145][ T5147] ? __pfx_kthread+0x10/0x10 [ 589.863165][ T5147] ? _raw_spin_unlock_irq+0x23/0x50 [ 589.863186][ T5147] ? lockdep_hardirqs_on+0x98/0x140 [ 589.863207][ T5147] ? __pfx_kthread+0x10/0x10 [ 589.863226][ T5147] ret_from_fork+0x599/0xb30 [ 589.863251][ T5147] ? __pfx_ret_from_fork+0x10/0x10 [ 589.863284][ T5147] ? __switch_to_asm+0x39/0x70 [ 589.863300][ T5147] ? __switch_to_asm+0x33/0x70 [ 589.863317][ T5147] ? __pfx_kthread+0x10/0x10 [ 589.863336][ T5147] ret_from_fork_asm+0x1a/0x30 [ 589.863372][ T5147] [ 589.863396][ T5147] kobject: kobject_add_internal failed for hci4:0 with -EEXIST, don't try to register things with the same name in the same directory. [ 589.895629][T13267] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci6/hci6:0' [ 589.896013][ T5147] Bluetooth: hci4: failed to register connection device [ 589.907328][T13267] CPU: 0 UID: 0 PID: 13267 Comm: kworker/u9:12 Not tainted syzkaller #0 PREEMPT(full) ** 38 printk messages dropped ** [ 589.908311][T13267] kthread+0x711/0x8a0 [ 589.908334][T13267] ? __pfx_worker_thread+0x10/0x10 [ 589.908356][T13267] ? __pfx_kthread+0x10/0x10 ** 1 printk messages dropped ** [ 589.908397][T13267] ? lockdep_hardirqs_on+0x98/0x140 ** 46 printk messages dropped ** [ 589.975060][ T5147] process_one_work+0x93a/0x15a0 [ 589.975105][ T5147] ? __pfx_process_one_work+0x10/0x10 ** 1 printk messages dropped ** [ 589.975163][ T5147] worker_thread+0x9b0/0xee0 [ 589.975211][ T5147] kthread+0x711/0x8a0 [ 589.975233][ T5147] ? __pfx_worker_thread+0x10/0x10 [ 589.975255][ T5147] ? __pfx_kthread+0x10/0x10 [ 589.975276][ T5147] ? _raw_spin_unlock_irq+0x23/0x50 [ 589.975297][ T5147] ? lockdep_hardirqs_on+0x98/0x140 [ 589.975317][ T5147] ? __pfx_kthread+0x10/0x10 [ 589.975337][ T5147] ret_from_fork+0x599/0xb30 [ 589.975361][ T5147] ? __pfx_ret_from_fork+0x10/0x10 [ 589.975394][ T5147] ? __switch_to_asm+0x39/0x70 [ 589.975411][ T5147] ? __switch_to_asm+0x33/0x70 [ 589.975427][ T5147] ? __pfx_kthread+0x10/0x10 [ 589.975447][ T5147] ret_from_fork_asm+0x1a/0x30 [ 589.975482][ T5147] ** 43 printk messages dropped ** [ 590.043176][T13267] ? __pfx_worker_thread+0x10/0x10 [ 590.043199][T13267] ? __pfx_kthread+0x10/0x10 [ 590.043219][T13267] ? _raw_spin_unlock_irq+0x23/0x50 [ 590.043239][T13267] ? lockdep_hardirqs_on+0x98/0x140 ** 47 printk messages dropped ** [ 590.127576][ T5147] ? __pfx_process_one_work+0x10/0x10 ** 1 printk messages dropped ** [ 590.127634][ T5147] worker_thread+0x9b0/0xee0 ** 1 printk messages dropped ** [ 590.127704][ T5147] ? __pfx_worker_thread+0x10/0x10 [ 590.127727][ T5147] ? __pfx_kthread+0x10/0x10 [ 590.127747][ T5147] ? _raw_spin_unlock_irq+0x23/0x50 [ 590.127768][ T5147] ? lockdep_hardirqs_on+0x98/0x140 [ 590.127789][ T5147] ? __pfx_kthread+0x10/0x10 [ 590.127808][ T5147] ret_from_fork+0x599/0xb30 [ 590.127833][ T5147] ? __pfx_ret_from_fork+0x10/0x10 [ 590.127865][ T5147] ? __switch_to_asm+0x39/0x70 [ 590.127882][ T5147] ? __switch_to_asm+0x33/0x70 [ 590.127899][ T5147] ? __pfx_kthread+0x10/0x10 [ 590.127918][ T5147] ret_from_fork_asm+0x1a/0x30 [ 590.127953][ T5147] [ 590.127977][ T5147] kobject: kobject_add_internal failed for hci4:0 with -EEXIST, don't try to register things with the same name in the same directory. [ 590.140316][T13267] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci7/hci7:0' ** 41 printk messages dropped ** [ 590.160395][T13267] ? __pfx_worker_thread+0x10/0x10 ** 51 printk messages dropped ** [ 590.213090][ T5147] ? assign_work+0x3a1/0x410 [ 590.213118][ T5147] worker_thread+0x9b0/0xee0 [ 590.213166][ T5147] kthread+0x711/0x8a0 [ 590.213188][ T5147] ? __pfx_worker_thread+0x10/0x10 [ 590.213211][ T5147] ? __pfx_kthread+0x10/0x10 [ 590.213231][ T5147] ? _raw_spin_unlock_irq+0x23/0x50 [ 590.213252][ T5147] ? lockdep_hardirqs_on+0x98/0x140 [ 590.213273][ T5147] ? __pfx_kthread+0x10/0x10 [ 590.213293][ T5147] ret_from_fork+0x599/0xb30 [ 590.213317][ T5147] ? __pfx_ret_from_fork+0x10/0x10 [ 590.213349][ T5147] ? __switch_to_asm+0x39/0x70 [ 590.213366][ T5147] ? __switch_to_asm+0x33/0x70 [ 590.213383][ T5147] ? __pfx_kthread+0x10/0x10 [ 590.213402][ T5147] ret_from_fork_asm+0x1a/0x30 [ 590.213437][ T5147] [ 590.213525][ T5147] kobject: kobject_add_internal failed for hci6:0 with -EEXIST, don't try to register things with the same name in the same directory. [ 590.237741][T13267] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci5/hci5:0' [ 590.253077][ T5147] Bluetooth: hci6: failed to register connection device ** 37 printk messages dropped ** [ 590.254688][T13267] ? assign_work+0x3a1/0x410 ** 2 printk messages dropped ** [ 590.254790][T13267] ? __pfx_worker_thread+0x10/0x10 ** 6 printk messages dropped ** [ 590.254952][T13267] ? __switch_to_asm+0x39/0x70 ** 43 printk messages dropped ** [ 590.373849][ T5147] ? process_one_work+0x868/0x15a0 [ 590.373870][ T5147] process_one_work+0x93a/0x15a0 [ 590.373914][ T5147] ? __pfx_process_one_work+0x10/0x10 [ 590.373945][ T5147] ? assign_work+0x3a1/0x410 [ 590.373973][ T5147] worker_thread+0x9b0/0xee0 [ 590.374021][ T5147] kthread+0x711/0x8a0 [ 590.374043][ T5147] ? __pfx_worker_thread+0x10/0x10 [ 590.374066][ T5147] ? __pfx_kthread+0x10/0x10 [ 590.374086][ T5147] ? _raw_spin_unlock_irq+0x23/0x50 [ 590.374107][ T5147] ? lockdep_hardirqs_on+0x98/0x140 [ 590.374128][ T5147] ? __pfx_kthread+0x10/0x10 [ 590.374148][ T5147] ret_from_fork+0x599/0xb30 [ 590.374174][ T5147] ? __pfx_ret_from_fork+0x10/0x10 [ 590.374206][ T5147] ? __switch_to_asm+0x39/0x70 [ 590.374223][ T5147] ? __switch_to_asm+0x33/0x70 [ 590.374239][ T5147] ? __pfx_kthread+0x10/0x10 ** 45 printk messages dropped ** [ 590.377640][T13267] ? _raw_spin_unlock_irq+0x23/0x50 ** 48 printk messages dropped ** [ 590.497093][T13267] ? process_one_work+0x868/0x15a0 ** 1 printk messages dropped ** [ 590.497157][T13267] ? __pfx_process_one_work+0x10/0x10 [ 590.497189][T13267] ? assign_work+0x3a1/0x410 [ 590.497216][T13267] worker_thread+0x9b0/0xee0 [ 590.497264][T13267] kthread+0x711/0x8a0 [ 590.497301][T13267] ? __pfx_worker_thread+0x10/0x10 [ 590.497323][T13267] ? __pfx_kthread+0x10/0x10 [ 590.497343][T13267] ? _raw_spin_unlock_irq+0x23/0x50 [ 590.497364][T13267] ? lockdep_hardirqs_on+0x98/0x140 [ 590.497385][T13267] ? __pfx_kthread+0x10/0x10 [ 590.497404][T13267] ret_from_fork+0x599/0xb30 [ 590.497429][T13267] ? __pfx_ret_from_fork+0x10/0x10 [ 590.497468][T13267] ? __switch_to_asm+0x39/0x70 [ 590.497485][T13267] ? __switch_to_asm+0x33/0x70 ** 46 printk messages dropped ** [ 590.512033][ T5147] ? _raw_spin_unlock_irq+0x23/0x50 ** 1 printk messages dropped ** [ 590.512074][ T5147] ? __pfx_kthread+0x10/0x10 ** 1 printk messages dropped ** [ 590.512119][ T5147] ? __pfx_ret_from_fork+0x10/0x10 [ 590.512152][ T5147] ? __switch_to_asm+0x39/0x70 [ 590.512168][ T5147] ? __switch_to_asm+0x33/0x70 [ 590.512184][ T5147] ? __pfx_kthread+0x10/0x10 [ 590.512205][ T5147] ret_from_fork_asm+0x1a/0x30 [ 590.512240][ T5147] [ 590.512265][ T5147] kobject: kobject_add_internal failed for hci6:0 with -EEXIST, don't try to register things with the same name in the same directory. [ 590.517594][T13267] Bluetooth: hci5: failed to register connection device [ 590.537204][T13267] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci4/hci4:0' ** 44 printk messages dropped ** [ 590.612320][T13267] ? _raw_spin_unlock_irq+0x23/0x50 [ 590.612341][T13267] ? lockdep_hardirqs_on+0x98/0x140 [ 590.612362][T13267] ? __pfx_kthread+0x10/0x10 [ 590.612381][T13267] ret_from_fork+0x599/0xb30 [ 590.612406][T13267] ? __pfx_ret_from_fork+0x10/0x10 [ 590.612444][T13267] ? __switch_to_asm+0x39/0x70 [ 590.612460][T13267] ? __switch_to_asm+0x33/0x70 [ 590.612477][T13267] ? __pfx_kthread+0x10/0x10 [ 590.612496][T13267] ret_from_fork_asm+0x1a/0x30 [ 590.612532][T13267] [ 590.612557][T13267] kobject: kobject_add_internal failed for hci4:0 with -EEXIST, don't try to register things with the same name in the same directory. [ 590.616319][ T5147] CPU: 1 UID: 0 PID: 5147 Comm: kworker/u9:1 Not tainted syzkaller #0 PREEMPT(full) ** 47 printk messages dropped ** [ 590.617524][ T5147] ? __switch_to_asm+0x33/0x70 [ 590.617540][ T5147] ? __pfx_kthread+0x10/0x10 [ 590.617560][ T5147] ret_from_fork_asm+0x1a/0x30 [ 590.617595][ T5147] [ 590.617920][ T5147] kobject: kobject_add_internal failed for hci6:0 with -EEXIST, don't try to register things with the same name in the same directory. [ 590.630400][T13267] Bluetooth: hci4: failed to register connection device [ 590.677102][T13267] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci5/hci5:0' [ 590.681859][ T5147] Bluetooth: hci6: failed to register connection device [ 590.686585][T13267] CPU: 0 UID: 0 PID: 13267 Comm: kworker/u9:12 Not tainted syzkaller #0 PREEMPT(full) ** 45 printk messages dropped ** [ 590.687728][T13267] ? __pfx_ret_from_fork+0x10/0x10 [ 590.687767][T13267] ? __switch_to_asm+0x39/0x70 [ 590.687784][T13267] ? __switch_to_asm+0x33/0x70 [ 590.687800][T13267] ? __pfx_kthread+0x10/0x10 [ 590.687820][T13267] ret_from_fork_asm+0x1a/0x30 [ 590.687855][T13267] [ 590.687881][T13267] kobject: kobject_add_internal failed for hci5:0 with -EEXIST, don't try to register things with the same name in the same directory. [ 590.797844][ T5147] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci4/hci4:0' [ 590.798964][T13267] Bluetooth: hci5: failed to register connection device [ 590.803925][ T5147] CPU: 1 UID: 0 PID: 5147 Comm: kworker/u9:1 Not tainted syzkaller #0 PREEMPT(full) [ 590.803949][ T5147] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 [ 590.803962][ T5147] Workqueue: hci4 hci_rx_work [ 590.803989][ T5147] Call Trace: [ 590.804005][ T5147] [ 590.804013][ T5147] dump_stack_lvl+0x189/0x250 [ 590.804037][ T5147] ? __pfx_dump_stack_lvl+0x10/0x10 [ 590.804053][ T5147] ? __pfx__printk+0x10/0x10 [ 590.804084][ T5147] ? kernfs_path_from_node+0x250/0x290 [ 590.804107][ T5147] ? kernfs_path_from_node+0x2f/0x290 [ 590.804135][ T5147] sysfs_create_dir_ns+0x259/0x280 [ 590.804160][ T5147] ? __pfx_sysfs_create_dir_ns+0x10/0x10 [ 590.804186][ T5147] ? do_raw_spin_unlock+0x122/0x240 ** 35 printk messages dropped ** [ 590.805112][ T5147] ? __switch_to_asm+0x33/0x70 [ 590.805129][ T5147] ? __pfx_kthread+0x10/0x10 ** 1 printk messages dropped ** [ 590.805183][ T5147] ** 1 printk messages dropped ** [ 590.809780][T11292] Bluetooth: hci6: command 0x2016 tx timeout [ 590.819566][ T5147] Bluetooth: hci4: failed to register connection device [ 590.855050][T13267] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci6/hci6:0' [ 590.909281][ T5147] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci7/hci7:0' [ 590.911668][T13267] CPU: 0 UID: 0 PID: 13267 Comm: kworker/u9:12 Not tainted syzkaller #0 PREEMPT(full) [ 590.911692][T13267] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 [ 590.911704][T13267] Workqueue: hci6 hci_rx_work [ 590.911732][T13267] Call Trace: [ 590.911740][T13267] [ 590.911748][T13267] dump_stack_lvl+0x189/0x250 [ 590.911771][T13267] ? __pfx_dump_stack_lvl+0x10/0x10 [ 590.911789][T13267] ? __pfx__printk+0x10/0x10 [ 590.911818][T13267] ? kernfs_path_from_node+0x250/0x290 [ 590.911841][T13267] ? kernfs_path_from_node+0x2f/0x290 [ 590.911869][T13267] sysfs_create_dir_ns+0x259/0x280 [ 590.911895][T13267] ? __pfx_sysfs_create_dir_ns+0x10/0x10 [ 590.911920][T13267] ? do_raw_spin_unlock+0x122/0x240 [ 590.911945][T13267] kobject_add_internal+0x6ab/0xcc0 ** 35 printk messages dropped ** [ 590.912862][T13267] ? __pfx_kthread+0x10/0x10 ** 55 printk messages dropped ** [ 590.917708][ T5147] kobject: kobject_add_internal failed for hci7:0 with -EEXIST, don't try to register things with the same name in the same directory. [ 590.924733][T13267] Bluetooth: hci6: failed to register connection device [ 590.940933][T13267] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci4/hci4:0' [ 590.958430][ T5147] Bluetooth: hci7: failed to register connection device [ 590.961931][T13267] CPU: 0 UID: 0 PID: 13267 Comm: kworker/u9:12 Not tainted syzkaller #0 PREEMPT(full) [ 590.961951][T13267] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 [ 590.961964][T13267] Workqueue: hci4 hci_rx_work [ 590.961993][T13267] Call Trace: [ 590.962001][T13267] [ 590.962009][T13267] dump_stack_lvl+0x189/0x250 [ 590.962031][T13267] ? __pfx_dump_stack_lvl+0x10/0x10 [ 590.962049][T13267] ? __pfx__printk+0x10/0x10 ** 45 printk messages dropped ** [ 591.031111][ T5147] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci5/hci5:0' ** 50 printk messages dropped ** [ 591.043367][ T5147] ? __pfx_kthread+0x10/0x10 ** 1 printk messages dropped ** [ 591.043421][ T5147] ** 1 printk messages dropped ** [ 591.076012][T13267] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci6/hci6:0' ** 50 printk messages dropped ** [ 591.095973][T13267] ? __pfx_kthread+0x10/0x10 [ 591.095993][T13267] ret_from_fork_asm+0x1a/0x30 [ 591.096028][T13267] [ 591.096053][T13267] kobject: kobject_add_internal failed for hci6:0 with -EEXIST, don't try to register things with the same name in the same directory. [ 591.211713][ T5147] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci7/hci7:0' [ 591.212541][T13267] Bluetooth: hci6: failed to register connection device [ 591.217918][T11292] Bluetooth: hci4: command 0x2016 tx timeout [ 591.224439][T13267] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci6/hci6:0' [ 591.231105][ T5147] CPU: 1 UID: 0 PID: 5147 Comm: kworker/u9:1 Not tainted syzkaller #0 PREEMPT(full) [ 591.231131][ T5147] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 [ 591.231144][ T5147] Workqueue: hci7 hci_rx_work [ 591.231172][ T5147] Call Trace: [ 591.231180][ T5147] [ 591.231189][ T5147] dump_stack_lvl+0x189/0x250 [ 591.231213][ T5147] ? __pfx_dump_stack_lvl+0x10/0x10 [ 591.231232][ T5147] ? __pfx__printk+0x10/0x10 [ 591.231263][ T5147] ? kernfs_path_from_node+0x250/0x290 [ 591.231287][ T5147] ? kernfs_path_from_node+0x2f/0x290 [ 591.231315][ T5147] sysfs_create_dir_ns+0x259/0x280 [ 591.231342][ T5147] ? __pfx_sysfs_create_dir_ns+0x10/0x10 [ 591.231380][ T5147] ? do_raw_spin_unlock+0x122/0x240 [ 591.231406][ T5147] kobject_add_internal+0x6ab/0xcc0 [ 591.231435][ T5147] kobject_add+0x155/0x220 [ 591.231458][ T5147] ? __pfx_kobject_add+0x10/0x10 [ 591.231485][ T5147] ? _raw_spin_unlock+0x28/0x50 [ 591.231511][ T5147] ? get_device_parent+0x366/0x3a0 ** 33 printk messages dropped ** [ 591.232403][ T5147] [ 591.232428][ T5147] kobject: kobject_add_internal failed for hci7:0 with -EEXIST, don't try to register things with the same name in the same directory. [ 591.235177][T13267] CPU: 0 UID: 0 PID: 13267 Comm: kworker/u9:12 Not tainted syzkaller #0 PREEMPT(full) [ 591.235198][T13267] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 [ 591.235210][T13267] Workqueue: hci6 hci_rx_work [ 591.235233][T13267] Call Trace: [ 591.235241][T13267] ** 48 printk messages dropped ** [ 591.249590][ T5147] Bluetooth: hci7: failed to register connection device [ 591.261928][T13267] Bluetooth: hci6: failed to register connection device [ 591.290480][ T5147] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci5/hci5:0' [ 591.295360][T13267] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci4/hci4:0' [ 591.301453][ T5147] CPU: 1 UID: 0 PID: 5147 Comm: kworker/u9:1 Not tainted syzkaller #0 PREEMPT(full) [ 591.301477][ T5147] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 ** 49 printk messages dropped ** [ 591.302695][ T5147] [ 591.302724][ T5147] kobject: kobject_add_internal failed for hci5:0 with -EEXIST, don't try to register things with the same name in the same directory. ** 6 printk messages dropped ** [ 591.306790][T13267] ? __pfx_dump_stack_lvl+0x10/0x10 [ 591.306807][T13267] ? __pfx__printk+0x10/0x10 [ 591.306837][T13267] ? kernfs_path_from_node+0x250/0x290 [ 591.306859][T13267] ? kernfs_path_from_node+0x2f/0x290 [ 591.306887][T13267] sysfs_create_dir_ns+0x259/0x280 [ 591.306913][T13267] ? __pfx_sysfs_create_dir_ns+0x10/0x10 [ 591.306938][T13267] ? do_raw_spin_unlock+0x122/0x240 [ 591.306962][T13267] kobject_add_internal+0x6ab/0xcc0 [ 591.306987][T13267] kobject_add+0x155/0x220 [ 591.307009][T13267] ? __pfx_kobject_add+0x10/0x10 [ 591.307036][T13267] ? _raw_spin_unlock+0x28/0x50 [ 591.307060][T13267] ? get_device_parent+0x366/0x3a0 [ 591.307080][T13267] device_add+0x408/0xb80 [ 591.307102][T13267] hci_conn_add_sysfs+0xd5/0x210 [ 591.307129][T13267] le_conn_complete_evt+0xf1d/0x1420 [ 591.307158][T13267] ? __pfx_le_conn_complete_evt+0x10/0x10 ** 37 printk messages dropped ** [ 591.493494][ T5147] Workqueue: hci7 hci_rx_work [ 591.493527][ T5147] Call Trace: [ 591.493535][ T5147] [ 591.493543][ T5147] dump_stack_lvl+0x189/0x250 [ 591.493566][ T5147] ? __pfx_dump_stack_lvl+0x10/0x10 [ 591.493584][ T5147] ? __pfx__printk+0x10/0x10 [ 591.493614][ T5147] ? kernfs_path_from_node+0x250/0x290 [ 591.493636][ T5147] ? kernfs_path_from_node+0x2f/0x290 [ 591.493663][ T5147] sysfs_create_dir_ns+0x259/0x280 [ 591.493689][ T5147] ? __pfx_sysfs_create_dir_ns+0x10/0x10 [ 591.493715][ T5147] ? do_raw_spin_unlock+0x122/0x240 [ 591.493739][ T5147] kobject_add_internal+0x6ab/0xcc0 [ 591.493765][ T5147] kobject_add+0x155/0x220 [ 591.493788][ T5147] ? __pfx_kobject_add+0x10/0x10 [ 591.493814][ T5147] ? _raw_spin_unlock+0x28/0x50 ** 42 printk messages dropped ** [ 591.498698][T13267] ? __pfx_dump_stack_lvl+0x10/0x10 ** 1 printk messages dropped ** [ 591.498742][T13267] ? kernfs_path_from_node+0x250/0x290 [ 591.498765][T13267] ? kernfs_path_from_node+0x2f/0x290 [ 591.498792][T13267] sysfs_create_dir_ns+0x259/0x280 [ 591.498819][T13267] ? __pfx_sysfs_create_dir_ns+0x10/0x10 [ 591.498844][T13267] ? do_raw_spin_unlock+0x122/0x240 [ 591.498867][T13267] kobject_add_internal+0x6ab/0xcc0 [ 591.498894][T13267] kobject_add+0x155/0x220 [ 591.498917][T13267] ? __pfx_kobject_add+0x10/0x10 [ 591.498942][T13267] ? _raw_spin_unlock+0x28/0x50 [ 591.498967][T13267] ? get_device_parent+0x366/0x3a0 [ 591.498990][T13267] device_add+0x408/0xb80 [ 591.499014][T13267] hci_conn_add_sysfs+0xd5/0x210 ** 42 printk messages dropped ** [ 591.629599][T13267] ** 2 printk messages dropped ** [ 591.629648][T13267] ? __pfx__printk+0x10/0x10 [ 591.629676][T13267] ? kernfs_path_from_node+0x250/0x290 [ 591.629699][T13267] ? kernfs_path_from_node+0x2f/0x290 ** 52 printk messages dropped ** [ 591.642854][ T5147] ? kernfs_path_from_node+0x2f/0x290 [ 591.642880][ T5147] sysfs_create_dir_ns+0x259/0x280 [ 591.642906][ T5147] ? __pfx_sysfs_create_dir_ns+0x10/0x10 [ 591.642932][ T5147] ? do_raw_spin_unlock+0x122/0x240 [ 591.642957][ T5147] kobject_add_internal+0x6ab/0xcc0 [ 591.642983][ T5147] kobject_add+0x155/0x220 [ 591.643006][ T5147] ? __pfx_kobject_add+0x10/0x10 [ 591.643032][ T5147] ? _raw_spin_unlock+0x28/0x50 [ 591.643057][ T5147] ? get_device_parent+0x366/0x3a0 [ 591.643080][ T5147] device_add+0x408/0xb80 [ 591.643104][ T5147] hci_conn_add_sysfs+0xd5/0x210 [ 591.643130][ T5147] le_conn_complete_evt+0xf1d/0x1420 [ 591.643159][ T5147] ? __pfx_le_conn_complete_evt+0x10/0x10 [ 591.643176][ T5147] ? __mutex_unlock_slowpath+0x1a1/0x730 [ 591.643207][ T5147] ? __pfx___mutex_unlock_slowpath+0x10/0x10 [ 591.643230][ T5147] ? skb_pull_data+0xfb/0x200 [ 591.643253][ T5147] hci_le_enh_conn_complete_evt+0x189/0x4a0 [ 591.643274][ T5147] ? __pfx_hci_le_enh_conn_complete_evt+0x10/0x10 [ 591.643298][ T5147] hci_event_packet+0x78f/0x1260 [ 591.643332][ T5147] ? __pfx_hci_le_meta_evt+0x10/0x10 [ 591.643353][ T5147] ? __pfx_hci_event_packet+0x10/0x10 [ 591.643380][ T5147] ? kcov_remote_start+0x18e/0x7f0 [ 591.643399][ T5147] ? lockdep_hardirqs_on+0x98/0x140 [ 591.643425][ T5147] ? hci_send_to_monitor+0xe2/0x590 [ 591.643448][ T5147] hci_rx_work+0x3ee/0x1060 [ 591.643482][ T5147] ? process_one_work+0x868/0x15a0 [ 591.643505][ T5147] process_one_work+0x93a/0x15a0 ** 28 printk messages dropped ** [ 591.790703][T13267] ? __pfx__printk+0x10/0x10 [ 591.790733][T13267] ? kernfs_path_from_node+0x250/0x290 ** 1 printk messages dropped ** [ 591.790784][T13267] sysfs_create_dir_ns+0x259/0x280 [ 591.790809][T13267] ? __pfx_sysfs_create_dir_ns+0x10/0x10 [ 591.790835][T13267] ? do_raw_spin_unlock+0x122/0x240 [ 591.790860][T13267] kobject_add_internal+0x6ab/0xcc0 [ 591.790887][T13267] kobject_add+0x155/0x220 [ 591.790909][T13267] ? __pfx_kobject_add+0x10/0x10 [ 591.790935][T13267] ? _raw_spin_unlock+0x28/0x50 [ 591.790960][T13267] ? get_device_parent+0x366/0x3a0 [ 591.790984][T13267] device_add+0x408/0xb80 [ 591.791007][T13267] hci_conn_add_sysfs+0xd5/0x210 [ 591.791034][T13267] le_conn_complete_evt+0xf1d/0x1420 [ 591.791063][T13267] ? __pfx_le_conn_complete_evt+0x10/0x10 [ 591.791080][T13267] ? __mutex_unlock_slowpath+0x1a1/0x730 [ 591.791111][T13267] ? __pfx___mutex_unlock_slowpath+0x10/0x10 [ 591.791133][T13267] ? skb_pull_data+0xfb/0x200 [ 591.791157][T13267] hci_le_enh_conn_complete_evt+0x189/0x4a0 [ 591.791178][T13267] ? __pfx_hci_le_enh_conn_complete_evt+0x10/0x10 ** 41 printk messages dropped ** [ 591.795122][ T5147] ? __pfx_kobject_add+0x10/0x10 [ 591.795149][ T5147] ? _raw_spin_unlock+0x28/0x50 [ 591.795173][ T5147] ? get_device_parent+0x366/0x3a0 ** 48 printk messages dropped ** [ 591.843392][T13267] sysfs_create_dir_ns+0x259/0x280 [ 591.843419][T13267] ? __pfx_sysfs_create_dir_ns+0x10/0x10 [ 591.843444][T13267] ? do_raw_spin_unlock+0x122/0x240 [ 591.843468][T13267] kobject_add_internal+0x6ab/0xcc0 [ 591.843495][T13267] kobject_add+0x155/0x220 [ 591.843517][T13267] ? __pfx_kobject_add+0x10/0x10 [ 591.843543][T13267] ? _raw_spin_unlock+0x28/0x50 [ 591.843574][T13267] ? get_device_parent+0x366/0x3a0 [ 591.843598][T13267] device_add+0x408/0xb80 [ 591.843621][T13267] hci_conn_add_sysfs+0xd5/0x210 [ 591.843647][T13267] le_conn_complete_evt+0xf1d/0x1420 [ 591.843677][T13267] ? __pfx_le_conn_complete_evt+0x10/0x10 [ 591.843694][T13267] ? __mutex_unlock_slowpath+0x1a1/0x730 [ 591.843725][T13267] ? __pfx___mutex_unlock_slowpath+0x10/0x10 [ 591.843747][T13267] ? skb_pull_data+0xfb/0x200 [ 591.843771][T13267] hci_le_enh_conn_complete_evt+0x189/0x4a0 [ 591.843793][T13267] ? __pfx_hci_le_enh_conn_complete_evt+0x10/0x10 [ 591.843816][T13267] hci_event_packet+0x78f/0x1260 [ 591.843842][T13267] ? __pfx_hci_le_meta_evt+0x10/0x10 [ 591.843864][T13267] ? __pfx_hci_event_packet+0x10/0x10 [ 591.843890][T13267] ? kcov_remote_start+0x18e/0x7f0 [ 591.843909][T13267] ? lockdep_hardirqs_on+0x98/0x140 [ 591.843935][T13267] ? hci_send_to_monitor+0xe2/0x590 [ 591.843959][T13267] hci_rx_work+0x3ee/0x1060 [ 591.843993][T13267] ? process_one_work+0x868/0x15a0 [ 591.844015][T13267] process_one_work+0x93a/0x15a0 [ 591.844059][T13267] ? __pfx_process_one_work+0x10/0x10 [ 591.844090][T13267] ? assign_work+0x3a1/0x410 ** 30 printk messages dropped ** [ 591.891678][ T5147] kobject_add_internal+0x6ab/0xcc0 ** 52 printk messages dropped ** [ 591.918445][T13267] ? __pfx_sysfs_create_dir_ns+0x10/0x10 ** 1 printk messages dropped ** [ 591.918493][T13267] kobject_add_internal+0x6ab/0xcc0 ** 1 printk messages dropped ** [ 591.918542][T13267] ? __pfx_kobject_add+0x10/0x10 ** 50 printk messages dropped ** [ 592.000194][ T5147] ? __pfx_sysfs_create_dir_ns+0x10/0x10 ** 1 printk messages dropped ** [ 592.000245][ T5147] kobject_add_internal+0x6ab/0xcc0 ** 1 printk messages dropped ** [ 592.000294][ T5147] ? __pfx_kobject_add+0x10/0x10 ** 50 printk messages dropped ** [ 592.098484][T13267] ? __pfx_sysfs_create_dir_ns+0x10/0x10 [ 592.098527][T13267] ? do_raw_spin_unlock+0x122/0x240 [ 592.098552][T13267] kobject_add_internal+0x6ab/0xcc0 [ 592.098586][T13267] kobject_add+0x155/0x220 [ 592.098608][T13267] ? __pfx_kobject_add+0x10/0x10 [ 592.098635][T13267] ? _raw_spin_unlock+0x28/0x50 [ 592.098660][T13267] ? get_device_parent+0x366/0x3a0 [ 592.098684][T13267] device_add+0x408/0xb80 [ 592.098708][T13267] hci_conn_add_sysfs+0xd5/0x210 [ 592.098734][T13267] le_conn_complete_evt+0xf1d/0x1420 ** 44 printk messages dropped ** [ 592.210800][ T5147] ? kernfs_path_from_node+0x2f/0x290 [ 592.210827][ T5147] sysfs_create_dir_ns+0x259/0x280 [ 592.210854][ T5147] ? __pfx_sysfs_create_dir_ns+0x10/0x10 [ 592.210880][ T5147] ? do_raw_spin_unlock+0x122/0x240 [ 592.210904][ T5147] kobject_add_internal+0x6ab/0xcc0 [ 592.210931][ T5147] kobject_add+0x155/0x220 [ 592.210954][ T5147] ? __pfx_kobject_add+0x10/0x10 [ 592.210980][ T5147] ? _raw_spin_unlock+0x28/0x50 [ 592.211004][ T5147] ? get_device_parent+0x366/0x3a0 [ 592.211028][ T5147] device_add+0x408/0xb80 [ 592.211051][ T5147] hci_conn_add_sysfs+0xd5/0x210 [ 592.211078][ T5147] le_conn_complete_evt+0xf1d/0x1420 [ 592.211106][ T5147] ? __pfx_le_conn_complete_evt+0x10/0x10 [ 592.211123][ T5147] ? __mutex_unlock_slowpath+0x1a1/0x730 [ 592.211154][ T5147] ? __pfx___mutex_unlock_slowpath+0x10/0x10 [ 592.211176][ T5147] ? skb_pull_data+0xfb/0x200 [ 592.211200][ T5147] hci_le_enh_conn_complete_evt+0x189/0x4a0 [ 592.211220][ T5147] ? __pfx_hci_le_enh_conn_complete_evt+0x10/0x10 [ 592.211244][ T5147] hci_event_packet+0x78f/0x1260 [ 592.211271][ T5147] ? __pfx_hci_le_meta_evt+0x10/0x10 [ 592.211292][ T5147] ? __pfx_hci_event_packet+0x10/0x10 ** 39 printk messages dropped ** [ 592.215830][T13267] ? _raw_spin_unlock+0x28/0x50 ** 50 printk messages dropped ** [ 592.257023][ T5147] ? __pfx_sysfs_create_dir_ns+0x10/0x10 [ 592.257049][ T5147] ? do_raw_spin_unlock+0x122/0x240 ** 1 printk messages dropped ** [ 592.257120][ T5147] kobject_add+0x155/0x220 [ 592.257143][ T5147] ? __pfx_kobject_add+0x10/0x10 [ 592.257170][ T5147] ? _raw_spin_unlock+0x28/0x50 [ 592.257195][ T5147] ? get_device_parent+0x366/0x3a0 [ 592.257218][ T5147] device_add+0x408/0xb80 [ 592.257241][ T5147] hci_conn_add_sysfs+0xd5/0x210 [ 592.257268][ T5147] le_conn_complete_evt+0xf1d/0x1420 [ 592.257297][ T5147] ? __pfx_le_conn_complete_evt+0x10/0x10 ** 46 printk messages dropped ** [ 592.371667][T13267] kobject_add_internal+0x6ab/0xcc0 [ 592.371695][T13267] kobject_add+0x155/0x220 [ 592.371718][T13267] ? __pfx_kobject_add+0x10/0x10 [ 592.371759][T13267] ? _raw_spin_unlock+0x28/0x50 [ 592.371791][T13267] ? get_device_parent+0x366/0x3a0 ** 1 printk messages dropped ** [ 592.371838][T13267] hci_conn_add_sysfs+0xd5/0x210 [ 592.371864][T13267] le_conn_complete_evt+0xf1d/0x1420 ** 49 printk messages dropped ** [ 592.402735][ T5147] ? __pfx_kobject_add+0x10/0x10 [ 592.402760][ T5147] ? _raw_spin_unlock+0x28/0x50 [ 592.402785][ T5147] ? get_device_parent+0x366/0x3a0 [ 592.402810][ T5147] device_add+0x408/0xb80 [ 592.402833][ T5147] hci_conn_add_sysfs+0xd5/0x210 [ 592.402859][ T5147] le_conn_complete_evt+0xf1d/0x1420 [ 592.402889][ T5147] ? __pfx_le_conn_complete_evt+0x10/0x10 [ 592.402906][ T5147] ? __mutex_unlock_slowpath+0x1a1/0x730 [ 592.402937][ T5147] ? __pfx___mutex_unlock_slowpath+0x10/0x10 [ 592.402959][ T5147] ? skb_pull_data+0xfb/0x200 [ 592.402983][ T5147] hci_le_enh_conn_complete_evt+0x189/0x4a0 [ 592.403005][ T5147] ? __pfx_hci_le_enh_conn_complete_evt+0x10/0x10 [ 592.403029][ T5147] hci_event_packet+0x78f/0x1260 ** 43 printk messages dropped ** [ 592.495806][T13267] ? _raw_spin_unlock+0x28/0x50 [ 592.495831][T13267] ? get_device_parent+0x366/0x3a0 [ 592.495855][T13267] device_add+0x408/0xb80 [ 592.495879][T13267] hci_conn_add_sysfs+0xd5/0x210 [ 592.495905][T13267] le_conn_complete_evt+0xf1d/0x1420 [ 592.495934][T13267] ? __pfx_le_conn_complete_evt+0x10/0x10 [ 592.495951][T13267] ? __mutex_unlock_slowpath+0x1a1/0x730 [ 592.495982][T13267] ? __pfx___mutex_unlock_slowpath+0x10/0x10 [ 592.496004][T13267] ? skb_pull_data+0xfb/0x200 [ 592.496028][T13267] hci_le_enh_conn_complete_evt+0x189/0x4a0 [ 592.496049][T13267] ? __pfx_hci_le_enh_conn_complete_evt+0x10/0x10 [ 592.496072][T13267] hci_event_packet+0x78f/0x1260 ** 41 printk messages dropped ** [ 592.561098][ T5147] ? do_raw_spin_unlock+0x122/0x240 ** 40 printk messages dropped ** [ 592.566485][T13267] CPU: 0 UID: 0 PID: 13267 Comm: kworker/u9:12 Not tainted syzkaller #0 PREEMPT(full) [ 592.566507][T13267] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 [ 592.566519][T13267] Workqueue: hci5 hci_rx_work [ 592.566550][T13267] Call Trace: [ 592.566558][T13267] [ 592.566565][T13267] dump_stack_lvl+0x189/0x250 [ 592.566587][T13267] ? __pfx_dump_stack_lvl+0x10/0x10 [ 592.566605][T13267] ? __pfx__printk+0x10/0x10 [ 592.566634][T13267] ? kernfs_path_from_node+0x250/0x290 ** 46 printk messages dropped ** [ 592.689625][ T5147] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci7/hci7:0' [ 592.708817][T13267] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci4/hci4:0' [ 592.714669][ T5147] CPU: 1 UID: 0 PID: 5147 Comm: kworker/u9:1 Not tainted syzkaller #0 PREEMPT(full) ** 52 printk messages dropped ** [ 592.718744][T13267] CPU: 0 UID: 0 PID: 13267 Comm: kworker/u9:12 Not tainted syzkaller #0 PREEMPT(full) [ 592.718765][T13267] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 [ 592.718777][T13267] Workqueue: hci4 hci_rx_work [ 592.718799][T13267] Call Trace: [ 592.718807][T13267] [ 592.718823][T13267] dump_stack_lvl+0x189/0x250 [ 592.718844][T13267] ? __pfx_dump_stack_lvl+0x10/0x10 [ 592.718861][T13267] ? __pfx__printk+0x10/0x10 [ 592.718889][T13267] ? kernfs_path_from_node+0x250/0x290 [ 592.718911][T13267] ? kernfs_path_from_node+0x2f/0x290 [ 592.718938][T13267] sysfs_create_dir_ns+0x259/0x280 [ 592.718964][T13267] ? __pfx_sysfs_create_dir_ns+0x10/0x10 [ 592.718989][T13267] ? do_raw_spin_unlock+0x122/0x240 [ 592.719014][T13267] kobject_add_internal+0x6ab/0xcc0 [ 592.719040][T13267] kobject_add+0x155/0x220 [ 592.719062][T13267] ? __pfx_kobject_add+0x10/0x10 [ 592.719096][T13267] ? _raw_spin_unlock+0x28/0x50 [ 592.719122][T13267] ? get_device_parent+0x366/0x3a0 [ 592.719145][T13267] device_add+0x408/0xb80 [ 592.719168][T13267] hci_conn_add_sysfs+0xd5/0x210 [ 592.719194][T13267] le_conn_complete_evt+0xf1d/0x1420 [ 592.719229][T13267] ? __pfx_le_conn_complete_evt+0x10/0x10 [ 592.719247][T13267] ? __mutex_unlock_slowpath+0x1a1/0x730 [ 592.719277][T13267] ? __pfx___mutex_unlock_slowpath+0x10/0x10 [ 592.719299][T13267] ? skb_pull_data+0xfb/0x200 [ 592.719323][T13267] hci_le_enh_conn_complete_evt+0x189/0x4a0 [ 592.719344][T13267] ? __pfx_hci_le_enh_conn_complete_evt+0x10/0x10 [ 592.719367][T13267] hci_event_packet+0x78f/0x1260 [ 592.719394][T13267] ? __pfx_hci_le_meta_evt+0x10/0x10 [ 592.719416][T13267] ? __pfx_hci_event_packet+0x10/0x10 [ 592.719442][T13267] ? kcov_remote_start+0x18e/0x7f0 [ 592.719460][T13267] ? lockdep_hardirqs_on+0x98/0x140 [ 592.719486][T13267] ? hci_send_to_monitor+0xe2/0x590 [ 592.719509][T13267] hci_rx_work+0x3ee/0x1060 [ 592.719543][T13267] ? process_one_work+0x868/0x15a0 [ 592.719565][T13267] process_one_work+0x93a/0x15a0 [ 592.719609][T13267] ? __pfx_process_one_work+0x10/0x10 ** 18 printk messages dropped ** [ 592.807297][ T5147] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci5/hci5:0' ** 1 printk messages dropped ** [ 592.841110][ T5147] CPU: 1 UID: 0 PID: 5147 Comm: kworker/u9:1 Not tainted syzkaller #0 PREEMPT(full) ** 52 printk messages dropped ** [ 592.845894][T13267] CPU: 0 UID: 0 PID: 13267 Comm: kworker/u9:12 Not tainted syzkaller #0 PREEMPT(full) [ 592.845915][T13267] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 [ 592.845926][T13267] Workqueue: hci4 hci_rx_work [ 592.845949][T13267] Call Trace: [ 592.845957][T13267] [ 592.845965][T13267] dump_stack_lvl+0x189/0x250 [ 592.845986][T13267] ? __pfx_dump_stack_lvl+0x10/0x10 [ 592.846002][T13267] ? __pfx__printk+0x10/0x10 [ 592.846032][T13267] ? kernfs_path_from_node+0x250/0x290 [ 592.846054][T13267] ? kernfs_path_from_node+0x2f/0x290 ** 47 printk messages dropped ** [ 592.956261][T13267] CPU: 0 UID: 0 PID: 13267 Comm: kworker/u9:12 Not tainted syzkaller #0 PREEMPT(full) [ 592.956286][T13267] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 [ 592.956299][T13267] Workqueue: hci6 hci_rx_work [ 592.956324][T13267] Call Trace: [ 592.956332][T13267] [ 592.956339][T13267] dump_stack_lvl+0x189/0x250 [ 592.956361][T13267] ? __pfx_dump_stack_lvl+0x10/0x10 [ 592.956378][T13267] ? __pfx__printk+0x10/0x10 [ 592.956406][T13267] ? kernfs_path_from_node+0x250/0x290 [ 592.956430][T13267] ? kernfs_path_from_node+0x2f/0x290 ** 46 printk messages dropped ** [ 592.961975][ T5147] Call Trace: ** 53 printk messages dropped ** [ 593.056962][T13267] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci5/hci5:0' [ 593.063247][ T5147] CPU: 1 UID: 0 PID: 5147 Comm: kworker/u9:1 Not tainted syzkaller #0 PREEMPT(full) [ 593.063274][ T5147] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 [ 593.063287][ T5147] Workqueue: hci4 hci_rx_work [ 593.063316][ T5147] Call Trace: [ 593.063325][ T5147] [ 593.063333][ T5147] dump_stack_lvl+0x189/0x250 [ 593.063356][ T5147] ? __pfx_dump_stack_lvl+0x10/0x10 [ 593.063374][ T5147] ? __pfx__printk+0x10/0x10 [ 593.063404][ T5147] ? kernfs_path_from_node+0x250/0x290 [ 593.063426][ T5147] ? kernfs_path_from_node+0x2f/0x290 ** 46 printk messages dropped ** [ 593.070999][T13267] Call Trace: [ 593.071007][T13267] ** 1 printk messages dropped ** [ 593.071037][T13267] ? __pfx_dump_stack_lvl+0x10/0x10 [ 593.071054][T13267] ? __pfx__printk+0x10/0x10 [ 593.071084][T13267] ? kernfs_path_from_node+0x250/0x290 [ 593.071111][T13267] ? kernfs_path_from_node+0x2f/0x290 [ 593.071138][T13267] sysfs_create_dir_ns+0x259/0x280 [ 593.071165][T13267] ? __pfx_sysfs_create_dir_ns+0x10/0x10 [ 593.071189][T13267] ? do_raw_spin_unlock+0x122/0x240 [ 593.071213][T13267] kobject_add_internal+0x6ab/0xcc0 [ 593.071243][T13267] kobject_add+0x155/0x220 [ 593.071266][T13267] ? __pfx_kobject_add+0x10/0x10 [ 593.071292][T13267] ? _raw_spin_unlock+0x28/0x50 [ 593.071316][T13267] ? get_device_parent+0x366/0x3a0 [ 593.071340][T13267] device_add+0x408/0xb80 [ 593.071363][T13267] hci_conn_add_sysfs+0xd5/0x210 [ 593.071390][T13267] le_conn_complete_evt+0xf1d/0x1420 [ 593.071428][T13267] ? __pfx_le_conn_complete_evt+0x10/0x10 [ 593.071446][T13267] ? __mutex_unlock_slowpath+0x1a1/0x730 [ 593.071476][T13267] ? __pfx___mutex_unlock_slowpath+0x10/0x10 [ 593.071499][T13267] ? skb_pull_data+0xfb/0x200 [ 593.071522][T13267] hci_le_enh_conn_complete_evt+0x189/0x4a0 [ 593.071543][T13267] ? __pfx_hci_le_enh_conn_complete_evt+0x10/0x10 ** 32 printk messages dropped ** [ 593.176407][ T5147] Workqueue: hci6 hci_rx_work [ 593.176435][ T5147] Call Trace: [ 593.176451][ T5147] [ 593.176459][ T5147] dump_stack_lvl+0x189/0x250 [ 593.176481][ T5147] ? __pfx_dump_stack_lvl+0x10/0x10 [ 593.176499][ T5147] ? __pfx__printk+0x10/0x10 [ 593.176529][ T5147] ? kernfs_path_from_node+0x250/0x290 [ 593.176553][ T5147] ? kernfs_path_from_node+0x2f/0x290 [ 593.176580][ T5147] sysfs_create_dir_ns+0x259/0x280 [ 593.176606][ T5147] ? __pfx_sysfs_create_dir_ns+0x10/0x10 ** 43 printk messages dropped ** [ 593.181227][T13267] Workqueue: hci7 hci_rx_work ** 2 printk messages dropped ** [ 593.181265][T13267] dump_stack_lvl+0x189/0x250 ** 1 printk messages dropped ** [ 593.181303][T13267] ? __pfx__printk+0x10/0x10 [ 593.181333][T13267] ? kernfs_path_from_node+0x250/0x290 [ 593.181355][T13267] ? kernfs_path_from_node+0x2f/0x290 [ 593.181382][T13267] sysfs_create_dir_ns+0x259/0x280 [ 593.181408][T13267] ? __pfx_sysfs_create_dir_ns+0x10/0x10 [ 593.181434][T13267] ? do_raw_spin_unlock+0x122/0x240 [ 593.181457][T13267] kobject_add_internal+0x6ab/0xcc0 [ 593.181483][T13267] kobject_add+0x155/0x220 [ 593.181505][T13267] ? __pfx_kobject_add+0x10/0x10 [ 593.181531][T13267] ? _raw_spin_unlock+0x28/0x50 [ 593.181556][T13267] ? get_device_parent+0x366/0x3a0 [ 593.181578][T13267] device_add+0x408/0xb80 [ 593.181602][T13267] hci_conn_add_sysfs+0xd5/0x210 [ 593.181628][T13267] le_conn_complete_evt+0xf1d/0x1420 [ 593.181657][T13267] ? __pfx_le_conn_complete_evt+0x10/0x10 [ 593.181674][T13267] ? __mutex_unlock_slowpath+0x1a1/0x730 [ 593.181704][T13267] ? __pfx___mutex_unlock_slowpath+0x10/0x10 [ 593.181726][T13267] ? skb_pull_data+0xfb/0x200 [ 593.181750][T13267] hci_le_enh_conn_complete_evt+0x189/0x4a0 [ 593.181777][T13267] ? __pfx_hci_le_enh_conn_complete_evt+0x10/0x10 [ 593.181800][T13267] hci_event_packet+0x78f/0x1260 [ 593.181827][T13267] ? __pfx_hci_le_meta_evt+0x10/0x10 [ 593.181848][T13267] ? __pfx_hci_event_packet+0x10/0x10 ** 30 printk messages dropped ** [ 593.346151][T13267] Workqueue: hci5 hci_rx_work ** 52 printk messages dropped ** [ 593.348991][ T5147] Workqueue: hci7 hci_rx_work [ 593.349015][ T5147] Call Trace: ** 2 printk messages dropped ** [ 593.349053][ T5147] ? __pfx_dump_stack_lvl+0x10/0x10 [ 593.349070][ T5147] ? __pfx__printk+0x10/0x10 [ 593.349100][ T5147] ? kernfs_path_from_node+0x250/0x290 [ 593.349123][ T5147] ? kernfs_path_from_node+0x2f/0x290 [ 593.349150][ T5147] sysfs_create_dir_ns+0x259/0x280 [ 593.349176][ T5147] ? __pfx_sysfs_create_dir_ns+0x10/0x10 [ 593.349196][ T5147] ? do_raw_spin_unlock+0x122/0x240 [ 593.349216][ T5147] kobject_add_internal+0x6ab/0xcc0 [ 593.349241][ T5147] kobject_add+0x155/0x220 [ 593.349264][ T5147] ? __pfx_kobject_add+0x10/0x10 [ 593.349290][ T5147] ? _raw_spin_unlock+0x28/0x50 [ 593.349315][ T5147] ? get_device_parent+0x366/0x3a0 [ 593.349339][ T5147] device_add+0x408/0xb80 [ 593.349362][ T5147] hci_conn_add_sysfs+0xd5/0x210 [ 593.349389][ T5147] le_conn_complete_evt+0xf1d/0x1420 [ 593.349418][ T5147] ? __pfx_le_conn_complete_evt+0x10/0x10 [ 593.349442][ T5147] ? __mutex_unlock_slowpath+0x1a1/0x730 [ 593.349473][ T5147] ? __pfx___mutex_unlock_slowpath+0x10/0x10 [ 593.349496][ T5147] ? skb_pull_data+0xfb/0x200 [ 593.349520][ T5147] hci_le_enh_conn_complete_evt+0x189/0x4a0 [ 593.349541][ T5147] ? __pfx_hci_le_enh_conn_complete_evt+0x10/0x10 [ 593.349565][ T5147] hci_event_packet+0x78f/0x1260 [ 593.349593][ T5147] ? __pfx_hci_le_meta_evt+0x10/0x10 [ 593.349614][ T5147] ? __pfx_hci_event_packet+0x10/0x10 [ 593.349640][ T5147] ? kcov_remote_start+0x18e/0x7f0 [ 593.349659][ T5147] ? lockdep_hardirqs_on+0x98/0x140 [ 593.349686][ T5147] ? hci_send_to_monitor+0xe2/0x590 [ 593.349710][ T5147] hci_rx_work+0x3ee/0x1060 [ 593.349744][ T5147] ? process_one_work+0x868/0x15a0 [ 593.349766][ T5147] process_one_work+0x93a/0x15a0 [ 593.349810][ T5147] ? __pfx_process_one_work+0x10/0x10 [ 593.349841][ T5147] ? assign_work+0x3a1/0x410 [ 593.349869][ T5147] worker_thread+0x9b0/0xee0 [ 593.349917][ T5147] kthread+0x711/0x8a0 [ 593.349938][ T5147] ? __pfx_worker_thread+0x10/0x10 [ 593.349961][ T5147] ? __pfx_kthread+0x10/0x10 [ 593.349981][ T5147] ? _raw_spin_unlock_irq+0x23/0x50 [ 593.350002][ T5147] ? lockdep_hardirqs_on+0x98/0x140 [ 593.350026][ T5147] ? __pfx_kthread+0x10/0x10 [ 593.350046][ T5147] ret_from_fork+0x599/0xb30 [ 593.350071][ T5147] ? __pfx_ret_from_fork+0x10/0x10 [ 593.350105][ T5147] ? __switch_to_asm+0x39/0x70 [ 593.350121][ T5147] ? __switch_to_asm+0x33/0x70 ** 12 printk messages dropped ** [ 593.381371][T13267] dump_stack_lvl+0x189/0x250 [ 593.381394][T13267] ? __pfx_dump_stack_lvl+0x10/0x10 [ 593.381412][T13267] ? __pfx__printk+0x10/0x10 [ 593.381448][T13267] ? kernfs_path_from_node+0x250/0x290 [ 593.381472][T13267] ? kernfs_path_from_node+0x2f/0x290 [ 593.381499][T13267] sysfs_create_dir_ns+0x259/0x280 [ 593.381525][T13267] ? __pfx_sysfs_create_dir_ns+0x10/0x10 [ 593.381551][T13267] ? do_raw_spin_unlock+0x122/0x240 [ 593.381576][T13267] kobject_add_internal+0x6ab/0xcc0 [ 593.381603][T13267] kobject_add+0x155/0x220 [ 593.381625][T13267] ? __pfx_kobject_add+0x10/0x10 [ 593.381652][T13267] ? _raw_spin_unlock+0x28/0x50 [ 593.381678][T13267] ? get_device_parent+0x366/0x3a0 [ 593.381702][T13267] device_add+0x408/0xb80 [ 593.381739][T13267] hci_conn_add_sysfs+0xd5/0x210 ** 41 printk messages dropped ** [ 593.452243][ T5147] ? __pfx_dump_stack_lvl+0x10/0x10 ** 2 printk messages dropped ** [ 593.452315][ T5147] ? kernfs_path_from_node+0x2f/0x290 [ 593.452342][ T5147] sysfs_create_dir_ns+0x259/0x280 ** 50 printk messages dropped ** [ 593.501756][T13267] ? __pfx_dump_stack_lvl+0x10/0x10 [ 593.501774][T13267] ? __pfx__printk+0x10/0x10 [ 593.501805][T13267] ? kernfs_path_from_node+0x250/0x290 [ 593.501829][T13267] ? kernfs_path_from_node+0x2f/0x290 [ 593.501856][T13267] sysfs_create_dir_ns+0x259/0x280 [ 593.501882][T13267] ? __pfx_sysfs_create_dir_ns+0x10/0x10 [ 593.501908][T13267] ? do_raw_spin_unlock+0x122/0x240 [ 593.501933][T13267] kobject_add_internal+0x6ab/0xcc0 [ 593.501959][T13267] kobject_add+0x155/0x220 [ 593.501982][T13267] ? __pfx_kobject_add+0x10/0x10 [ 593.502008][T13267] ? _raw_spin_unlock+0x28/0x50 [ 593.502033][T13267] ? get_device_parent+0x366/0x3a0 [ 593.502057][T13267] device_add+0x408/0xb80 [ 593.502080][T13267] hci_conn_add_sysfs+0xd5/0x210 [ 593.502106][T13267] le_conn_complete_evt+0xf1d/0x1420 [ 593.502136][T13267] ? __pfx_le_conn_complete_evt+0x10/0x10 [ 593.502153][T13267] ? __mutex_unlock_slowpath+0x1a1/0x730 [ 593.502183][T13267] ? __pfx___mutex_unlock_slowpath+0x10/0x10 [ 593.502206][T13267] ? skb_pull_data+0xfb/0x200 [ 593.502229][T13267] hci_le_enh_conn_complete_evt+0x189/0x4a0 [ 593.502250][T13267] ? __pfx_hci_le_enh_conn_complete_evt+0x10/0x10 [ 593.502273][T13267] hci_event_packet+0x78f/0x1260 [ 593.502300][T13267] ? __pfx_hci_le_meta_evt+0x10/0x10 [ 593.502321][T13267] ? __pfx_hci_event_packet+0x10/0x10 [ 593.502347][T13267] ? kcov_remote_start+0x18e/0x7f0 [ 593.502366][T13267] ? lockdep_hardirqs_on+0x98/0x140 [ 593.502392][T13267] ? hci_send_to_monitor+0xe2/0x590 [ 593.502415][T13267] hci_rx_work+0x3ee/0x1060 [ 593.502457][T13267] ? process_one_work+0x868/0x15a0 [ 593.502478][T13267] process_one_work+0x93a/0x15a0 [ 593.502523][T13267] ? __pfx_process_one_work+0x10/0x10 [ 593.502563][T13267] ? assign_work+0x3a1/0x410 [ 593.502590][T13267] worker_thread+0x9b0/0xee0 [ 593.502639][T13267] kthread+0x711/0x8a0 [ 593.502661][T13267] ? __pfx_worker_thread+0x10/0x10 2025/12/02 02:19:18 executed programs: 4458 [ 593.502684][T13267] ? __pfx_kthread+0x10/0x10 [ 593.502705][T13267] ? _raw_spin_unlock_irq+0x23/0x50 [ 593.502726][T13267] ? lockdep_hardirqs_on+0x98/0x140 [ 593.502747][T13267] ? __pfx_kthread+0x10/0x10 [ 593.502767][T13267] ret_from_fork+0x599/0xb30 [ 593.502792][T13267] ? __pfx_ret_from_fork+0x10/0x10 [ 593.502825][T13267] ? __switch_to_asm+0x39/0x70 [ 593.502842][T13267] ? __switch_to_asm+0x33/0x70 [ 593.502858][T13267] ? __pfx_kthread+0x10/0x10 [ 593.502878][T13267] ret_from_fork_asm+0x1a/0x30 [ 593.502913][T13267] [ 593.502939][T13267] kobject: kobject_add_internal failed for hci7:0 with -EEXIST, don't try to register things with the same name in the same directory. [ 593.600159][ T5147] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci4/hci4:0' [ 593.602674][T13267] Bluetooth: hci7: failed to register connection device [ 593.613811][ T31] INFO: task syz-executor:5969 blocked for more than 143 seconds. [ 593.619423][T13267] Bluetooth: hci5: command 0x2016 tx timeout [ 593.622804][ T31] Not tainted syzkaller #0 [ 593.643560][T13267] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci7/hci7:0' [ 593.645948][ T5147] CPU: 1 UID: 0 PID: 5147 Comm: kworker/u9:1 Not tainted syzkaller #0 PREEMPT(full) [ 593.645973][ T5147] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 [ 593.645985][ T5147] Workqueue: hci4 hci_rx_work [ 593.646012][ T5147] Call Trace: [ 593.646020][ T5147] [ 593.646028][ T5147] dump_stack_lvl+0x189/0x250 [ 593.646051][ T5147] ? __pfx_dump_stack_lvl+0x10/0x10 [ 593.646068][ T5147] ? __pfx__printk+0x10/0x10 [ 593.646099][ T5147] ? kernfs_path_from_node+0x250/0x290 [ 593.646122][ T5147] ? kernfs_path_from_node+0x2f/0x290 [ 593.646149][ T5147] sysfs_create_dir_ns+0x259/0x280 [ 593.646187][ T5147] ? __pfx_sysfs_create_dir_ns+0x10/0x10 [ 593.646212][ T5147] ? do_raw_spin_unlock+0x122/0x240 [ 593.646239][ T5147] kobject_add_internal+0x6ab/0xcc0 [ 593.646267][ T5147] kobject_add+0x155/0x220 [ 593.646290][ T5147] ? __pfx_kobject_add+0x10/0x10 [ 593.646317][ T5147] ? _raw_spin_unlock+0x28/0x50 [ 593.646343][ T5147] ? get_device_parent+0x366/0x3a0 [ 593.646367][ T5147] device_add+0x408/0xb80 [ 593.646391][ T5147] hci_conn_add_sysfs+0xd5/0x210 [ 593.646418][ T5147] le_conn_complete_evt+0xf1d/0x1420 [ 593.646449][ T5147] ? __pfx_le_conn_complete_evt+0x10/0x10 [ 593.646466][ T5147] ? __mutex_unlock_slowpath+0x1a1/0x730 [ 593.646498][ T5147] ? __pfx___mutex_unlock_slowpath+0x10/0x10 [ 593.646521][ T5147] ? skb_pull_data+0xfb/0x200 [ 593.646546][ T5147] hci_le_enh_conn_complete_evt+0x189/0x4a0 [ 593.646567][ T5147] ? __pfx_hci_le_enh_conn_complete_evt+0x10/0x10 [ 593.646591][ T5147] hci_event_packet+0x78f/0x1260 [ 593.646620][ T5147] ? __pfx_hci_le_meta_evt+0x10/0x10 [ 593.646642][ T5147] ? __pfx_hci_event_packet+0x10/0x10 [ 593.646669][ T5147] ? kcov_remote_start+0x18e/0x7f0 [ 593.646688][ T5147] ? lockdep_hardirqs_on+0x98/0x140 [ 593.646715][ T5147] ? hci_send_to_monitor+0xe2/0x590 [ 593.646739][ T5147] hci_rx_work+0x3ee/0x1060 [ 593.646773][ T5147] ? process_one_work+0x868/0x15a0 [ 593.646795][ T5147] process_one_work+0x93a/0x15a0 [ 593.646839][ T5147] ? __pfx_process_one_work+0x10/0x10 [ 593.646871][ T5147] ? assign_work+0x3a1/0x410 [ 593.646898][ T5147] worker_thread+0x9b0/0xee0 [ 593.646947][ T5147] kthread+0x711/0x8a0 [ 593.646968][ T5147] ? __pfx_worker_thread+0x10/0x10 [ 593.646991][ T5147] ? __pfx_kthread+0x10/0x10 [ 593.647012][ T5147] ? _raw_spin_unlock_irq+0x23/0x50 ** 26 printk messages dropped ** [ 593.651035][T13267] ? _raw_spin_unlock+0x28/0x50 ** 5 printk messages dropped ** [ 593.651179][T13267] ? __mutex_unlock_slowpath+0x1a1/0x730 [ 593.651210][T13267] ? __pfx___mutex_unlock_slowpath+0x10/0x10 [ 593.651233][T13267] ? skb_pull_data+0xfb/0x200 [ 593.651256][T13267] hci_le_enh_conn_complete_evt+0x189/0x4a0 [ 593.651277][T13267] ? __pfx_hci_le_enh_conn_complete_evt+0x10/0x10 [ 593.651301][T13267] hci_event_packet+0x78f/0x1260 [ 593.651328][T13267] ? __pfx_hci_le_meta_evt+0x10/0x10 [ 593.651349][T13267] ? __pfx_hci_event_packet+0x10/0x10 [ 593.651375][T13267] ? kcov_remote_start+0x18e/0x7f0 [ 593.651394][T13267] ? lockdep_hardirqs_on+0x98/0x140 [ 593.651426][T13267] ? hci_send_to_monitor+0xe2/0x590 [ 593.651450][T13267] hci_rx_work+0x3ee/0x1060 [ 593.651483][T13267] ? process_one_work+0x868/0x15a0 [ 593.651505][T13267] process_one_work+0x93a/0x15a0 [ 593.651549][T13267] ? __pfx_process_one_work+0x10/0x10 [ 593.651581][T13267] ? assign_work+0x3a1/0x410 [ 593.651608][T13267] worker_thread+0x9b0/0xee0 [ 593.651656][T13267] kthread+0x711/0x8a0 ** 72 printk messages dropped ** [ 593.820024][ T5147] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci6/hci6:0' [ 593.836271][ T31] task:syz-executor state:D [ 593.849514][ T5147] CPU: 1 UID: 0 PID: 5147 Comm: kworker/u9:1 Not tainted syzkaller #0 PREEMPT(full) [ 593.849542][ T5147] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 [ 593.849555][ T5147] Workqueue: hci6 hci_rx_work [ 593.849582][ T5147] Call Trace: [ 593.849590][ T5147] [ 593.849598][ T5147] dump_stack_lvl+0x189/0x250 [ 593.849621][ T5147] ? __pfx_dump_stack_lvl+0x10/0x10 [ 593.849639][ T5147] ? __pfx__printk+0x10/0x10 [ 593.849670][ T5147] ? kernfs_path_from_node+0x250/0x290 [ 593.849693][ T5147] ? kernfs_path_from_node+0x2f/0x290 [ 593.849720][ T5147] sysfs_create_dir_ns+0x259/0x280 [ 593.849746][ T5147] ? __pfx_sysfs_create_dir_ns+0x10/0x10 [ 593.849772][ T5147] ? do_raw_spin_unlock+0x122/0x240 [ 593.849796][ T5147] kobject_add_internal+0x6ab/0xcc0 [ 593.849823][ T5147] kobject_add+0x155/0x220 [ 593.849846][ T5147] ? __pfx_kobject_add+0x10/0x10 [ 593.849872][ T5147] ? _raw_spin_unlock+0x28/0x50 [ 593.849896][ T5147] ? get_device_parent+0x366/0x3a0 [ 593.849920][ T5147] device_add+0x408/0xb80 [ 593.849944][ T5147] hci_conn_add_sysfs+0xd5/0x210 [ 593.849971][ T5147] le_conn_complete_evt+0xf1d/0x1420 [ 593.850000][ T5147] ? __pfx_le_conn_complete_evt+0x10/0x10 [ 593.850018][ T5147] ? __mutex_unlock_slowpath+0x1a1/0x730 [ 593.850048][ T5147] ? __pfx___mutex_unlock_slowpath+0x10/0x10 [ 593.850071][ T5147] ? skb_pull_data+0xfb/0x200 [ 593.850095][ T5147] hci_le_enh_conn_complete_evt+0x189/0x4a0 [ 593.850116][ T5147] ? __pfx_hci_le_enh_conn_complete_evt+0x10/0x10 [ 593.850139][ T5147] hci_event_packet+0x78f/0x1260 [ 593.850173][ T5147] ? __pfx_hci_le_meta_evt+0x10/0x10 [ 593.850194][ T5147] ? __pfx_hci_event_packet+0x10/0x10 [ 593.850221][ T5147] ? kcov_remote_start+0x18e/0x7f0 ** 24 printk messages dropped ** [ 593.908028][T13267] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci4/hci4:0' [ 593.914006][T11292] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci7/hci7:0' [ 593.919066][T13267] CPU: 0 UID: 0 PID: 13267 Comm: kworker/u9:12 Not tainted syzkaller #0 PREEMPT(full) [ 593.919093][T13267] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 [ 593.919106][T13267] Workqueue: hci4 hci_rx_work [ 593.919135][T13267] Call Trace: [ 593.919143][T13267] [ 593.919152][T13267] dump_stack_lvl+0x189/0x250 [ 593.919175][T13267] ? __pfx_dump_stack_lvl+0x10/0x10 [ 593.919193][T13267] ? __pfx__printk+0x10/0x10 [ 593.919223][T13267] ? kernfs_path_from_node+0x250/0x290 [ 593.919246][T13267] ? kernfs_path_from_node+0x2f/0x290 [ 593.919274][T13267] sysfs_create_dir_ns+0x259/0x280 [ 593.919299][T13267] ? __pfx_sysfs_create_dir_ns+0x10/0x10 [ 593.919333][T13267] ? do_raw_spin_unlock+0x122/0x240 [ 593.919358][T13267] kobject_add_internal+0x6ab/0xcc0 [ 593.919385][T13267] kobject_add+0x155/0x220 [ 593.919408][T13267] ? __pfx_kobject_add+0x10/0x10 [ 593.919434][T13267] ? _raw_spin_unlock+0x28/0x50 [ 593.919459][T13267] ? get_device_parent+0x366/0x3a0 [ 593.919482][T13267] device_add+0x408/0xb80 [ 593.919505][T13267] hci_conn_add_sysfs+0xd5/0x210 [ 593.919531][T13267] le_conn_complete_evt+0xf1d/0x1420 [ 593.919560][T13267] ? __pfx_le_conn_complete_evt+0x10/0x10 [ 593.919578][T13267] ? __mutex_unlock_slowpath+0x1a1/0x730 [ 593.919609][T13267] ? __pfx___mutex_unlock_slowpath+0x10/0x10 [ 593.919631][T13267] ? skb_pull_data+0xfb/0x200 [ 593.919655][T13267] hci_le_enh_conn_complete_evt+0x189/0x4a0 [ 593.919676][T13267] ? __pfx_hci_le_enh_conn_complete_evt+0x10/0x10 [ 593.919700][T13267] hci_event_packet+0x78f/0x1260 [ 593.919727][T13267] ? __pfx_hci_le_meta_evt+0x10/0x10 [ 593.919748][T13267] ? __pfx_hci_event_packet+0x10/0x10 [ 593.919775][T13267] ? kcov_remote_start+0x18e/0x7f0 [ 593.919795][T13267] ? lockdep_hardirqs_on+0x98/0x140 [ 593.919820][T13267] ? hci_send_to_monitor+0xe2/0x590 [ 593.919844][T13267] hci_rx_work+0x3ee/0x1060 [ 593.919878][T13267] ? process_one_work+0x868/0x15a0 [ 593.919900][T13267] process_one_work+0x93a/0x15a0 [ 593.919944][T13267] ? __pfx_process_one_work+0x10/0x10 [ 593.919975][T13267] ? assign_work+0x3a1/0x410 [ 593.920002][T13267] worker_thread+0x9b0/0xee0 [ 593.920049][T13267] kthread+0x711/0x8a0 [ 593.920071][T13267] ? __pfx_worker_thread+0x10/0x10 [ 593.920093][T13267] ? __pfx_kthread+0x10/0x10 [ 593.920113][T13267] ? _raw_spin_unlock_irq+0x23/0x50 [ 593.920135][T13267] ? lockdep_hardirqs_on+0x98/0x140 [ 593.920156][T13267] ? __pfx_kthread+0x10/0x10 [ 593.920175][T13267] ret_from_fork+0x599/0xb30 [ 593.920200][T13267] ? __pfx_ret_from_fork+0x10/0x10 [ 593.920232][T13267] ? __switch_to_asm+0x39/0x70 [ 593.920249][T13267] ? __switch_to_asm+0x33/0x70 [ 593.920265][T13267] ? __pfx_kthread+0x10/0x10 [ 593.920285][T13267] ret_from_fork_asm+0x1a/0x30 [ 593.920319][T13267] [ 593.920351][T13267] kobject: kobject_add_internal failed for hci4:0 with -EEXIST, don't try to register things with the same name in the same directory. [ 593.921483][T11292] CPU: 1 UID: 0 PID: 11292 Comm: kworker/u9:10 Not tainted syzkaller #0 PREEMPT(full) [ 593.921503][T11292] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 [ 593.921514][T11292] Workqueue: hci7 hci_rx_work [ 593.921536][T11292] Call Trace: [ 593.921543][T11292] [ 593.921551][T11292] dump_stack_lvl+0x189/0x250 [ 593.921572][T11292] ? __pfx_dump_stack_lvl+0x10/0x10 [ 593.921590][T11292] ? __pfx__printk+0x10/0x10 [ 593.921619][T11292] ? kernfs_path_from_node+0x250/0x290 [ 593.921640][T11292] ? kernfs_path_from_node+0x2f/0x290 [ 593.921667][T11292] sysfs_create_dir_ns+0x259/0x280 [ 593.921693][T11292] ? __pfx_sysfs_create_dir_ns+0x10/0x10 [ 593.921719][T11292] ? do_raw_spin_unlock+0x122/0x240 [ 593.921743][T11292] kobject_add_internal+0x6ab/0xcc0 [ 593.921769][T11292] kobject_add+0x155/0x220 [ 593.921792][T11292] ? __pfx_kobject_add+0x10/0x10 [ 593.921818][T11292] ? _raw_spin_unlock+0x28/0x50 [ 593.921841][T11292] ? get_device_parent+0x366/0x3a0 [ 593.921864][T11292] device_add+0x408/0xb80 [ 593.921887][T11292] hci_conn_add_sysfs+0xd5/0x210 [ 593.921913][T11292] le_conn_complete_evt+0xf1d/0x1420 [ 593.921942][T11292] ? __pfx_le_conn_complete_evt+0x10/0x10 [ 593.921960][T11292] ? __mutex_unlock_slowpath+0x1a1/0x730 [ 593.921990][T11292] ? __pfx___mutex_unlock_slowpath+0x10/0x10 [ 593.922012][T11292] ? skb_pull_data+0xfb/0x200 [ 593.922036][T11292] hci_le_enh_conn_complete_evt+0x189/0x4a0 [ 593.922057][T11292] ? __pfx_hci_le_enh_conn_complete_evt+0x10/0x10 [ 593.922088][T11292] hci_event_packet+0x78f/0x1260 [ 593.922115][T11292] ? __pfx_hci_le_meta_evt+0x10/0x10 [ 593.922136][T11292] ? __pfx_hci_event_packet+0x10/0x10 [ 593.922161][T11292] ? kcov_remote_start+0x18e/0x7f0 [ 593.922181][T11292] ? lockdep_hardirqs_on+0x98/0x140 [ 593.922206][T11292] ? hci_send_to_monitor+0xe2/0x590 [ 593.922230][T11292] hci_rx_work+0x3ee/0x1060 [ 593.922263][T11292] ? process_one_work+0x868/0x15a0 [ 593.922284][T11292] process_one_work+0x93a/0x15a0 [ 593.922328][T11292] ? __pfx_process_one_work+0x10/0x10 [ 593.922359][T11292] ? assign_work+0x3a1/0x410 [ 593.922386][T11292] worker_thread+0x9b0/0xee0 [ 593.922434][T11292] kthread+0x711/0x8a0 [ 593.922456][T11292] ? __pfx_worker_thread+0x10/0x10 [ 593.922478][T11292] ? __pfx_kthread+0x10/0x10 [ 593.922499][T11292] ? _raw_spin_unlock_irq+0x23/0x50 [ 593.922520][T11292] ? lockdep_hardirqs_on+0x98/0x140 [ 593.922540][T11292] ? __pfx_kthread+0x10/0x10 [ 593.922559][T11292] ret_from_fork+0x599/0xb30 [ 593.922583][T11292] ? __pfx_ret_from_fork+0x10/0x10 [ 593.922615][T11292] ? __switch_to_asm+0x39/0x70 [ 593.922632][T11292] ? __switch_to_asm+0x33/0x70 [ 593.922649][T11292] ? __pfx_kthread+0x10/0x10 [ 593.922667][T11292] ret_from_fork_asm+0x1a/0x30 [ 593.922702][T11292] [ 593.922727][T11292] kobject: kobject_add_internal failed for hci7:0 with -EEXIST, don't try to register things with the same name in the same directory. [ 593.930298][T13267] Bluetooth: hci4: failed to register connection device [ 593.936644][T11292] Bluetooth: hci7: failed to register connection device [ 594.000895][ T31] Call Trace: [ 594.022719][T11292] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci6/hci6:0' [ 594.070935][T13267] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci5/hci5:0' [ 594.072592][T11292] CPU: 1 UID: 0 PID: 11292 Comm: kworker/u9:10 Not tainted syzkaller #0 PREEMPT(full) [ 594.072617][T11292] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 [ 594.072629][T11292] Workqueue: hci6 hci_rx_work [ 594.072657][T11292] Call Trace: [ 594.072664][T11292] [ 594.072672][T11292] dump_stack_lvl+0x189/0x250 [ 594.072695][T11292] ? __pfx_dump_stack_lvl+0x10/0x10 [ 594.072713][T11292] ? __pfx__printk+0x10/0x10 [ 594.072743][T11292] ? kernfs_path_from_node+0x250/0x290 [ 594.072766][T11292] ? kernfs_path_from_node+0x2f/0x290 [ 594.072793][T11292] sysfs_create_dir_ns+0x259/0x280 [ 594.072819][T11292] ? __pfx_sysfs_create_dir_ns+0x10/0x10 [ 594.072845][T11292] ? do_raw_spin_unlock+0x122/0x240 [ 594.072869][T11292] kobject_add_internal+0x6ab/0xcc0 [ 594.072896][T11292] kobject_add+0x155/0x220 [ 594.072919][T11292] ? __pfx_kobject_add+0x10/0x10 [ 594.072945][T11292] ? _raw_spin_unlock+0x28/0x50 [ 594.072969][T11292] ? get_device_parent+0x366/0x3a0 [ 594.072992][T11292] device_add+0x408/0xb80 [ 594.073015][T11292] hci_conn_add_sysfs+0xd5/0x210 [ 594.073042][T11292] le_conn_complete_evt+0xf1d/0x1420 [ 594.073078][T11292] ? __pfx_le_conn_complete_evt+0x10/0x10 [ 594.073095][T11292] ? __mutex_unlock_slowpath+0x1a1/0x730 [ 594.073126][T11292] ? __pfx___mutex_unlock_slowpath+0x10/0x10 [ 594.073149][T11292] ? skb_pull_data+0xfb/0x200 [ 594.073171][T11292] hci_le_enh_conn_complete_evt+0x189/0x4a0 [ 594.073190][T11292] ? __pfx_hci_le_enh_conn_complete_evt+0x10/0x10 [ 594.073214][T11292] hci_event_packet+0x78f/0x1260 [ 594.073242][T11292] ? __pfx_hci_le_meta_evt+0x10/0x10 [ 594.073263][T11292] ? __pfx_hci_event_packet+0x10/0x10 [ 594.073290][T11292] ? kcov_remote_start+0x18e/0x7f0 [ 594.073309][T11292] ? lockdep_hardirqs_on+0x98/0x140 [ 594.073336][T11292] ? hci_send_to_monitor+0xe2/0x590 [ 594.073359][T11292] hci_rx_work+0x3ee/0x1060 [ 594.073393][T11292] ? process_one_work+0x868/0x15a0 [ 594.073415][T11292] process_one_work+0x93a/0x15a0 [ 594.073460][T11292] ? __pfx_process_one_work+0x10/0x10 [ 594.073491][T11292] ? assign_work+0x3a1/0x410 [ 594.073523][T11292] worker_thread+0x9b0/0xee0 [ 594.073571][T11292] kthread+0x711/0x8a0 [ 594.073593][T11292] ? __pfx_worker_thread+0x10/0x10 [ 594.073615][T11292] ? __pfx_kthread+0x10/0x10 [ 594.073636][T11292] ? _raw_spin_unlock_irq+0x23/0x50 [ 594.073656][T11292] ? lockdep_hardirqs_on+0x98/0x140 [ 594.073677][T11292] ? __pfx_kthread+0x10/0x10 [ 594.073696][T11292] ret_from_fork+0x599/0xb30 [ 594.073721][T11292] ? __pfx_ret_from_fork+0x10/0x10 [ 594.073753][T11292] ? __switch_to_asm+0x39/0x70 ** 8 printk messages dropped ** [ 594.093964][T13267] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 [ 594.093977][T13267] Workqueue: hci5 hci_rx_work [ 594.094004][T13267] Call Trace: [ 594.094013][T13267] [ 594.094020][T13267] dump_stack_lvl+0x189/0x250 [ 594.094043][T13267] ? __pfx_dump_stack_lvl+0x10/0x10 [ 594.094061][T13267] ? __pfx__printk+0x10/0x10 [ 594.094091][T13267] ? kernfs_path_from_node+0x250/0x290 [ 594.094114][T13267] ? kernfs_path_from_node+0x2f/0x290 [ 594.094141][T13267] sysfs_create_dir_ns+0x259/0x280 [ 594.094168][T13267] ? __pfx_sysfs_create_dir_ns+0x10/0x10 [ 594.094194][T13267] ? do_raw_spin_unlock+0x122/0x240 [ 594.094219][T13267] kobject_add_internal+0x6ab/0xcc0 [ 594.094245][T13267] kobject_add+0x155/0x220 [ 594.094267][T13267] ? __pfx_kobject_add+0x10/0x10 [ 594.094293][T13267] ? _raw_spin_unlock+0x28/0x50 [ 594.094324][T13267] ? get_device_parent+0x366/0x3a0 [ 594.094347][T13267] device_add+0x408/0xb80 [ 594.094371][T13267] hci_conn_add_sysfs+0xd5/0x210 [ 594.094398][T13267] le_conn_complete_evt+0xf1d/0x1420 [ 594.094427][T13267] ? __pfx_le_conn_complete_evt+0x10/0x10 [ 594.094444][T13267] ? __mutex_unlock_slowpath+0x1a1/0x730 ** 34 printk messages dropped ** [ 594.148435][ T5147] Call Trace: [ 594.148443][ T5147] [ 594.148451][ T5147] dump_stack_lvl+0x189/0x250 [ 594.148474][ T5147] ? __pfx_dump_stack_lvl+0x10/0x10 [ 594.148491][ T5147] ? __pfx__printk+0x10/0x10 [ 594.148521][ T5147] ? kernfs_path_from_node+0x250/0x290 [ 594.148544][ T5147] ? kernfs_path_from_node+0x2f/0x290 [ 594.148572][ T5147] sysfs_create_dir_ns+0x259/0x280 [ 594.148598][ T5147] ? __pfx_sysfs_create_dir_ns+0x10/0x10 [ 594.148623][ T5147] ? do_raw_spin_unlock+0x122/0x240 [ 594.148648][ T5147] kobject_add_internal+0x6ab/0xcc0 [ 594.148675][ T5147] kobject_add+0x155/0x220 [ 594.148697][ T5147] ? __pfx_kobject_add+0x10/0x10 [ 594.148723][ T5147] ? _raw_spin_unlock+0x28/0x50 [ 594.148747][ T5147] ? get_device_parent+0x366/0x3a0 [ 594.148771][ T5147] device_add+0x408/0xb80 [ 594.148794][ T5147] hci_conn_add_sysfs+0xd5/0x210 [ 594.148821][ T5147] le_conn_complete_evt+0xf1d/0x1420 [ 594.148850][ T5147] ? __pfx_le_conn_complete_evt+0x10/0x10 [ 594.148867][ T5147] ? __mutex_unlock_slowpath+0x1a1/0x730 [ 594.148897][ T5147] ? __pfx___mutex_unlock_slowpath+0x10/0x10 [ 594.148919][ T5147] ? skb_pull_data+0xfb/0x200 [ 594.148943][ T5147] hci_le_enh_conn_complete_evt+0x189/0x4a0 [ 594.148964][ T5147] ? __pfx_hci_le_enh_conn_complete_evt+0x10/0x10 [ 594.148988][ T5147] hci_event_packet+0x78f/0x1260 [ 594.149015][ T5147] ? __pfx_hci_le_meta_evt+0x10/0x10 [ 594.149036][ T5147] ? __pfx_hci_event_packet+0x10/0x10 [ 594.149062][ T5147] ? kcov_remote_start+0x18e/0x7f0 [ 594.149081][ T5147] ? lockdep_hardirqs_on+0x98/0x140 [ 594.149107][ T5147] ? hci_send_to_monitor+0xe2/0x590 [ 594.149130][ T5147] hci_rx_work+0x3ee/0x1060 [ 594.149164][ T5147] ? process_one_work+0x868/0x15a0 [ 594.149186][ T5147] process_one_work+0x93a/0x15a0 [ 594.149230][ T5147] ? __pfx_process_one_work+0x10/0x10 [ 594.149262][ T5147] ? assign_work+0x3a1/0x410 [ 594.149289][ T5147] worker_thread+0x9b0/0xee0 [ 594.149343][ T5147] kthread+0x711/0x8a0 [ 594.149365][ T5147] ? __pfx_worker_thread+0x10/0x10 [ 594.149388][ T5147] ? __pfx_kthread+0x10/0x10 [ 594.149409][ T5147] ? _raw_spin_unlock_irq+0x23/0x50 [ 594.149430][ T5147] ? lockdep_hardirqs_on+0x98/0x140 [ 594.149450][ T5147] ? __pfx_kthread+0x10/0x10 [ 594.149469][ T5147] ret_from_fork+0x599/0xb30 [ 594.149495][ T5147] ? __pfx_ret_from_fork+0x10/0x10 [ 594.149527][ T5147] ? __switch_to_asm+0x39/0x70 [ 594.149543][ T5147] ? __switch_to_asm+0x33/0x70 [ 594.149560][ T5147] ? __pfx_kthread+0x10/0x10 [ 594.149580][ T5147] ret_from_fork_asm+0x1a/0x30 [ 594.149616][ T5147] [ 594.149641][ T5147] kobject: kobject_add_internal failed for hci7:0 with -EEXIST, don't try to register things with the same name in the same directory. [ 594.152953][T11292] CPU: 1 UID: 0 PID: 11292 Comm: kworker/u9:10 Not tainted syzkaller #0 PREEMPT(full) [ 594.152975][T11292] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 [ 594.152987][T11292] Workqueue: hci4 hci_rx_work [ 594.153011][T11292] Call Trace: [ 594.153019][T11292] [ 594.153027][T11292] dump_stack_lvl+0x189/0x250 [ 594.153048][T11292] ? __pfx_dump_stack_lvl+0x10/0x10 [ 594.153074][T11292] ? __pfx__printk+0x10/0x10 [ 594.153104][T11292] ? kernfs_path_from_node+0x250/0x290 [ 594.153126][T11292] ? kernfs_path_from_node+0x2f/0x290 [ 594.153153][T11292] sysfs_create_dir_ns+0x259/0x280 [ 594.153179][T11292] ? __pfx_sysfs_create_dir_ns+0x10/0x10 [ 594.153204][T11292] ? do_raw_spin_unlock+0x122/0x240 [ 594.153229][T11292] kobject_add_internal+0x6ab/0xcc0 [ 594.153255][T11292] kobject_add+0x155/0x220 ** 31 printk messages dropped ** [ 594.154074][T11292] ? __pfx_ret_from_fork+0x10/0x10 ** 18 printk messages dropped ** [ 594.320272][T13267] ? __pfx__printk+0x10/0x10 ** 1 printk messages dropped ** [ 594.320326][T13267] ? kernfs_path_from_node+0x2f/0x290 [ 594.320354][T13267] sysfs_create_dir_ns+0x259/0x280 [ 594.320380][T13267] ? __pfx_sysfs_create_dir_ns+0x10/0x10 [ 594.320405][T13267] ? do_raw_spin_unlock+0x122/0x240 [ 594.320430][T13267] kobject_add_internal+0x6ab/0xcc0 ** 49 printk messages dropped ** [ 594.341571][T15152] ? kernfs_path_from_node+0x250/0x290 ** 1 printk messages dropped ** [ 594.341622][T15152] sysfs_create_dir_ns+0x259/0x280 [ 594.341648][T15152] ? __pfx_sysfs_create_dir_ns+0x10/0x10 [ 594.341674][T15152] ? do_raw_spin_unlock+0x122/0x240 [ 594.341698][T15152] kobject_add_internal+0x6ab/0xcc0 ** 51 printk messages dropped ** [ 594.389994][T13267] sysfs_create_dir_ns+0x259/0x280 ** 1 printk messages dropped ** [ 594.390045][T13267] ? do_raw_spin_unlock+0x122/0x240 ** 1 printk messages dropped ** [ 594.390097][T13267] kobject_add+0x155/0x220 ** 97 printk messages dropped ** [ 594.461042][T13267] Workqueue: hci4 hci_rx_work ** 1 printk messages dropped ** [ 594.461077][T13267] ** 3 printk messages dropped ** [ 594.461158][T13267] ? kernfs_path_from_node+0x250/0x290 ** 49 printk messages dropped ** [ 594.571717][T15152] Call Trace: ** 2 printk messages dropped ** [ 594.571758][T15152] ? __pfx_dump_stack_lvl+0x10/0x10 ** 1 printk messages dropped ** [ 594.571808][T15152] ? kernfs_path_from_node+0x250/0x290 ** 2 printk messages dropped ** [ 594.571888][T15152] ? __pfx_sysfs_create_dir_ns+0x10/0x10 ** 1 printk messages dropped ** [ 594.571940][T15152] kobject_add_internal+0x6ab/0xcc0 ** 1 printk messages dropped ** [ 594.571991][T15152] ? __pfx_kobject_add+0x10/0x10 ** 50 printk messages dropped ** [ 594.677036][T15152] ? __pfx_dump_stack_lvl+0x10/0x10 ** 1 printk messages dropped ** [ 594.677084][T15152] ? kernfs_path_from_node+0x250/0x290 [ 594.677108][T15152] ? kernfs_path_from_node+0x2f/0x290 [ 594.677136][T15152] sysfs_create_dir_ns+0x259/0x280 [ 594.677162][T15152] ? __pfx_sysfs_create_dir_ns+0x10/0x10 [ 594.677188][T15152] ? do_raw_spin_unlock+0x122/0x240 ** 50 printk messages dropped ** [ 594.687915][T13267] sysfs_create_dir_ns+0x259/0x280 ** 48 printk messages dropped ** [ 594.843928][T13267] Workqueue: hci6 hci_rx_work [ 594.843955][T13267] Call Trace: [ 594.843963][T13267] [ 594.843971][T13267] dump_stack_lvl+0x189/0x250 [ 594.843995][T13267] ? __pfx_dump_stack_lvl+0x10/0x10 [ 594.844012][T13267] ? __pfx__printk+0x10/0x10 [ 594.844091][T13267] ? kernfs_path_from_node+0x250/0x290 [ 594.844115][T13267] ? kernfs_path_from_node+0x2f/0x290 [ 594.844142][T13267] sysfs_create_dir_ns+0x259/0x280 [ 594.844168][T13267] ? __pfx_sysfs_create_dir_ns+0x10/0x10 [ 594.844193][T13267] ? do_raw_spin_unlock+0x122/0x240 [ 594.844218][T13267] kobject_add_internal+0x6ab/0xcc0 ** 97 printk messages dropped ** [ 594.902666][ T31] ? __pfx_schedule_timeout+0x10/0x10 ** 1 printk messages dropped ** [ 594.904072][T15152] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 [ 594.904084][T15152] Workqueue: hci4 hci_rx_work [ 594.904109][T15152] Call Trace: ** 3 printk messages dropped ** [ 594.904164][T15152] ? __pfx__printk+0x10/0x10 ** 1 printk messages dropped ** [ 594.904218][T15152] ? kernfs_path_from_node+0x2f/0x290 ** 49 printk messages dropped ** [ 594.933169][T13267] Call Trace: ** 53 printk messages dropped ** [ 595.046726][T11292] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci4/hci4:0' ** 1 printk messages dropped ** [ 595.048280][T13267] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 ** 51 printk messages dropped ** [ 595.053524][T15152] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci7/hci7:0' [ 595.060370][T13267] Bluetooth: hci6: failed to register connection device [ 595.060474][T13267] Bluetooth: hci6: command 0x2016 tx timeout ** 49 printk messages dropped ** [ 595.071881][T11292] ? __pfx_kthread+0x10/0x10 ** 3 printk messages dropped ** [ 595.076314][ T31] wait_for_completion+0x2bf/0x5d0 [ 595.090836][T15152] CPU: 1 UID: 0 PID: 15152 Comm: kworker/u9:13 Not tainted syzkaller #0 PREEMPT(full) [ 595.090860][T15152] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 [ 595.090872][T15152] Workqueue: hci7 hci_rx_work [ 595.090898][T15152] Call Trace: [ 595.090906][T15152] [ 595.090914][T15152] dump_stack_lvl+0x189/0x250 [ 595.090936][T15152] ? __pfx_dump_stack_lvl+0x10/0x10 [ 595.090953][T15152] ? __pfx__printk+0x10/0x10 [ 595.090983][T15152] ? kernfs_path_from_node+0x250/0x290 [ 595.091006][T15152] ? kernfs_path_from_node+0x2f/0x290 ** 45 printk messages dropped ** [ 595.111883][ T31] ? __flush_work+0xd2/0xbc0 [ 595.117366][T15152] Bluetooth: hci7: failed to register connection device [ 595.122859][ T31] ? __flush_work+0xd2/0xbc0 [ 595.249493][T15152] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci6/hci6:0' [ 595.352803][ T5147] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci4/hci4:0' [ 595.358260][T15152] CPU: 1 UID: 0 PID: 15152 Comm: kworker/u9:13 Not tainted syzkaller #0 PREEMPT(full) [ 595.358284][T15152] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 [ 595.358297][T15152] Workqueue: hci6 hci_rx_work [ 595.358326][T15152] Call Trace: [ 595.358334][T15152] [ 595.358342][T15152] dump_stack_lvl+0x189/0x250 [ 595.358364][T15152] ? __pfx_dump_stack_lvl+0x10/0x10 [ 595.358381][T15152] ? __pfx__printk+0x10/0x10 [ 595.358412][T15152] ? kernfs_path_from_node+0x250/0x290 [ 595.358435][T15152] ? kernfs_path_from_node+0x2f/0x290 [ 595.358462][T15152] sysfs_create_dir_ns+0x259/0x280 [ 595.358488][T15152] ? __pfx_sysfs_create_dir_ns+0x10/0x10 ** 13 printk messages dropped ** [ 595.358836][T15152] hci_le_enh_conn_complete_evt+0x189/0x4a0 ** 27 printk messages dropped ** [ 595.367768][T11292] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci7/hci7:0' ** 48 printk messages dropped ** [ 595.382497][T11292] ? __switch_to_asm+0x39/0x70 ** 1 printk messages dropped ** [ 595.382531][T11292] ? __pfx_kthread+0x10/0x10 ** 3 printk messages dropped ** [ 595.393967][ T31] __flush_work+0x9b9/0xbc0 [ 595.398654][T11292] Bluetooth: hci7: failed to register connection device [ 595.402603][ T31] ? __flush_work+0xd2/0xbc0 ** 52 printk messages dropped ** [ 595.422473][ T5147] ret_from_fork_asm+0x1a/0x30 ** 54 printk messages dropped ** [ 595.444887][T13267] ** 1 printk messages dropped ** [ 595.455933][ T31] ? __pfx___cancel_work+0x10/0x10 [ 595.458318][ T5147] Bluetooth: hci4: failed to register connection device ** 49 printk messages dropped ** [ 595.547457][T13267] kthread+0x711/0x8a0 [ 595.547479][T13267] ? __pfx_worker_thread+0x10/0x10 ** 2 printk messages dropped ** [ 595.547543][T13267] ? lockdep_hardirqs_on+0x98/0x140 ** 1 printk messages dropped ** [ 595.547583][T13267] ret_from_fork+0x599/0xb30 ** 50 printk messages dropped ** [ 595.568224][ T5147] ? __pfx_kthread+0x10/0x10 ** 52 printk messages dropped ** [ 595.599138][T13267] kthread+0x711/0x8a0 ** 1 printk messages dropped ** [ 595.599183][T13267] ? __pfx_kthread+0x10/0x10 ** 1 printk messages dropped ** [ 595.599224][T13267] ? lockdep_hardirqs_on+0x98/0x140 ** 49 printk messages dropped ** [ 595.667258][T13267] process_one_work+0x93a/0x15a0 ** 1 printk messages dropped ** [ 595.667333][T13267] ? assign_work+0x3a1/0x410 ** 1 printk messages dropped ** [ 595.667410][T13267] kthread+0x711/0x8a0 ** 52 printk messages dropped ** [ 595.686752][ T5147] kthread+0x711/0x8a0 ** 1 printk messages dropped ** [ 595.686797][ T5147] ? __pfx_kthread+0x10/0x10 ** 1 printk messages dropped ** [ 595.686838][ T5147] ? lockdep_hardirqs_on+0x98/0x140 ** 1 printk messages dropped ** [ 595.686878][ T5147] ret_from_fork+0x599/0xb30 ** 49 printk messages dropped ** [ 595.806661][T13267] ? __pfx_process_one_work+0x10/0x10 ** 50 printk messages dropped ** [ 595.870645][T11292] ? hci_send_to_monitor+0xe2/0x590 ** 2 printk messages dropped ** [ 595.870724][T11292] process_one_work+0x93a/0x15a0 ** 1 printk messages dropped ** [ 595.870800][T11292] ? assign_work+0x3a1/0x410 ** 2 printk messages dropped ** [ 595.870897][T11292] ? __pfx_worker_thread+0x10/0x10 ** 50 printk messages dropped ** [ 595.926730][T13267] ? __pfx_process_one_work+0x10/0x10 ** 50 printk messages dropped ** [ 595.964715][T11292] ? hci_send_to_monitor+0xe2/0x590 ** 1 printk messages dropped ** [ 595.964772][T11292] ? process_one_work+0x868/0x15a0 [ 595.964794][T11292] process_one_work+0x93a/0x15a0 ** 1 printk messages dropped ** [ 595.964869][T11292] ? assign_work+0x3a1/0x410 ** 2 printk messages dropped ** [ 595.964964][T11292] ? __pfx_worker_thread+0x10/0x10 ** 49 printk messages dropped ** [ 596.090090][T11292] ? hci_send_to_monitor+0xe2/0x590 ** 52 printk messages dropped ** [ 596.116366][T13267] ? hci_send_to_monitor+0xe2/0x590 [ 596.116389][T13267] hci_rx_work+0x3ee/0x1060 ** 1 printk messages dropped ** [ 596.116445][T13267] process_one_work+0x93a/0x15a0 ** 1 printk messages dropped ** [ 596.116520][T13267] ? assign_work+0x3a1/0x410 ** 1 printk messages dropped ** [ 596.116595][T13267] kthread+0x711/0x8a0 ** 51 printk messages dropped ** [ 596.208324][T13267] hci_rx_work+0x3ee/0x1060 ** 50 printk messages dropped ** [ 596.228127][T11292] ? lockdep_hardirqs_on+0x98/0x140 [ 596.228153][T11292] ? hci_send_to_monitor+0xe2/0x590 [ 596.228177][T11292] hci_rx_work+0x3ee/0x1060 [ 596.228211][T11292] ? process_one_work+0x868/0x15a0 [ 596.228233][T11292] process_one_work+0x93a/0x15a0 [ 596.228277][T11292] ? __pfx_process_one_work+0x10/0x10 [ 596.228307][T11292] ? assign_work+0x3a1/0x410 [ 596.228333][T11292] worker_thread+0x9b0/0xee0 ** 48 printk messages dropped ** [ 596.324340][T11292] ? kcov_remote_start+0x18e/0x7f0 [ 596.324359][T11292] ? lockdep_hardirqs_on+0x98/0x140 [ 596.324384][T11292] ? hci_send_to_monitor+0xe2/0x590 [ 596.324407][T11292] hci_rx_work+0x3ee/0x1060 [ 596.324442][T11292] ? process_one_work+0x868/0x15a0 [ 596.324463][T11292] process_one_work+0x93a/0x15a0 [ 596.324507][T11292] ? __pfx_process_one_work+0x10/0x10 [ 596.324538][T11292] ? assign_work+0x3a1/0x410 [ 596.324565][T11292] worker_thread+0x9b0/0xee0 ** 17 printk messages dropped ** [ 596.332976][ T5147] Call Trace: [ 596.332984][ T5147] ** 1 printk messages dropped ** [ 596.333013][ T5147] ? __pfx_dump_stack_lvl+0x10/0x10 ** 90 printk messages dropped ** [ 596.439442][T11292] ? __pfx_kthread+0x10/0x10 [ 596.439463][T11292] ? _raw_spin_unlock_irq+0x23/0x50 [ 596.439484][T11292] ? lockdep_hardirqs_on+0x98/0x140 [ 596.439505][T11292] ? __pfx_kthread+0x10/0x10 [ 596.439524][T11292] ret_from_fork+0x599/0xb30 [ 596.439549][T11292] ? __pfx_ret_from_fork+0x10/0x10 [ 596.439581][T11292] ? __switch_to_asm+0x39/0x70 [ 596.439598][T11292] ? __switch_to_asm+0x33/0x70 [ 596.439614][T11292] ? __pfx_kthread+0x10/0x10 [ 596.439634][T11292] ret_from_fork_asm+0x1a/0x30 ** 4 printk messages dropped ** [ 596.460802][ T5147] CPU: 0 UID: 0 PID: 5147 Comm: kworker/u9:1 Not tainted syzkaller #0 PREEMPT(full) ** 38 printk messages dropped ** [ 596.461773][ T5147] kthread+0x711/0x8a0 [ 596.461795][ T5147] ? __pfx_worker_thread+0x10/0x10 ** 1 printk messages dropped ** [ 596.461837][ T5147] ? _raw_spin_unlock_irq+0x23/0x50 [ 596.461858][ T5147] ? lockdep_hardirqs_on+0x98/0x140 ** 49 printk messages dropped ** [ 596.545217][ T5147] process_one_work+0x93a/0x15a0 [ 596.545261][ T5147] ? __pfx_process_one_work+0x10/0x10 [ 596.545293][ T5147] ? assign_work+0x3a1/0x410 [ 596.545320][ T5147] worker_thread+0x9b0/0xee0 [ 596.545368][ T5147] kthread+0x711/0x8a0 [ 596.545391][ T5147] ? __pfx_worker_thread+0x10/0x10 [ 596.545413][ T5147] ? __pfx_kthread+0x10/0x10 [ 596.545434][ T5147] ? _raw_spin_unlock_irq+0x23/0x50 [ 596.545456][ T5147] ? lockdep_hardirqs_on+0x98/0x140 [ 596.545477][ T5147] ? __pfx_kthread+0x10/0x10 ** 47 printk messages dropped ** [ 596.551474][T11292] kthread+0x711/0x8a0 [ 596.551495][T11292] ? __pfx_worker_thread+0x10/0x10 [ 596.551517][T11292] ? __pfx_kthread+0x10/0x10 ** 1 printk messages dropped ** [ 596.551559][T11292] ? lockdep_hardirqs_on+0x98/0x140 ** 49 printk messages dropped ** [ 596.628275][ T5147] ? __pfx_process_one_work+0x10/0x10 ** 1 printk messages dropped ** [ 596.628333][ T5147] worker_thread+0x9b0/0xee0 [ 596.628381][ T5147] kthread+0x711/0x8a0 [ 596.628404][ T5147] ? __pfx_worker_thread+0x10/0x10 [ 596.628426][ T5147] ? __pfx_kthread+0x10/0x10 [ 596.628446][ T5147] ? _raw_spin_unlock_irq+0x23/0x50 [ 596.628467][ T5147] ? lockdep_hardirqs_on+0x98/0x140 [ 596.628488][ T5147] ? __pfx_kthread+0x10/0x10 [ 596.628507][ T5147] ret_from_fork+0x599/0xb30 [ 596.628532][ T5147] ? __pfx_ret_from_fork+0x10/0x10 [ 596.628565][ T5147] ? __switch_to_asm+0x39/0x70 [ 596.628582][ T5147] ? __switch_to_asm+0x33/0x70 [ 596.628599][ T5147] ? __pfx_kthread+0x10/0x10 [ 596.628618][ T5147] ret_from_fork_asm+0x1a/0x30 [ 596.628653][ T5147] [ 596.628681][ T5147] kobject: kobject_add_internal failed for hci4:0 with -EEXIST, don't try to register things with the same name in the same directory. [ 596.632354][ T31] ? lockdep_hardirqs_on+0x98/0x140 [ 596.632384][ T31] get_signal+0x1285/0x1340 [ 596.640605][ T5147] Bluetooth: hci4: failed to register connection device [ 596.648303][ T5147] Bluetooth: hci7: command 0x2016 tx timeout [ 596.684975][ T5147] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci5/hci5:0' [ 596.697016][ T31] arch_do_signal_or_restart+0x9a/0x7a0 [ 596.704625][ T5147] CPU: 0 UID: 0 PID: 5147 Comm: kworker/u9:1 Not tainted syzkaller #0 PREEMPT(full) [ 596.704650][ T5147] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 [ 596.704662][ T5147] Workqueue: hci5 hci_rx_work [ 596.704690][ T5147] Call Trace: [ 596.704698][ T5147] [ 596.704705][ T5147] dump_stack_lvl+0x189/0x250 [ 596.704729][ T5147] ? __pfx_dump_stack_lvl+0x10/0x10 [ 596.704746][ T5147] ? __pfx__printk+0x10/0x10 ** 27 printk messages dropped ** [ 596.705453][ T5147] process_one_work+0x93a/0x15a0 ** 50 printk messages dropped ** [ 596.778809][T13267] ? __pfx_hci_event_packet+0x10/0x10 ** 2 printk messages dropped ** [ 596.778881][T13267] ? hci_send_to_monitor+0xe2/0x590 ** 2 printk messages dropped ** [ 596.778959][T13267] process_one_work+0x93a/0x15a0 [ 596.779003][T13267] ? __pfx_process_one_work+0x10/0x10 [ 596.779034][T13267] ? assign_work+0x3a1/0x410 [ 596.779061][T13267] worker_thread+0x9b0/0xee0 [ 596.779114][T13267] kthread+0x711/0x8a0 [ 596.779136][T13267] ? __pfx_worker_thread+0x10/0x10 [ 596.779159][T13267] ? __pfx_kthread+0x10/0x10 [ 596.779179][T13267] ? _raw_spin_unlock_irq+0x23/0x50 [ 596.779200][T13267] ? lockdep_hardirqs_on+0x98/0x140 [ 596.779221][T13267] ? __pfx_kthread+0x10/0x10 ** 43 printk messages dropped ** [ 596.847057][ T5147] hci_rx_work+0x3ee/0x1060 ** 50 printk messages dropped ** [ 596.985068][T13267] hci_event_packet+0x78f/0x1260 ** 1 printk messages dropped ** [ 596.985124][T13267] ? __pfx_hci_event_packet+0x10/0x10 ** 1 printk messages dropped ** [ 596.985169][T13267] ? lockdep_hardirqs_on+0x98/0x140 ** 1 printk messages dropped ** [ 596.985218][T13267] hci_rx_work+0x3ee/0x1060 [ 596.985252][T13267] ? process_one_work+0x868/0x15a0 [ 596.985274][T13267] process_one_work+0x93a/0x15a0 [ 596.985318][T13267] ? __pfx_process_one_work+0x10/0x10 [ 596.985349][T13267] ? assign_work+0x3a1/0x410 [ 596.985376][T13267] worker_thread+0x9b0/0xee0 [ 596.985424][T13267] kthread+0x711/0x8a0 [ 596.985445][T13267] ? __pfx_worker_thread+0x10/0x10 [ 596.985468][T13267] ? __pfx_kthread+0x10/0x10 [ 596.985488][T13267] ? _raw_spin_unlock_irq+0x23/0x50 [ 596.985510][T13267] ? lockdep_hardirqs_on+0x98/0x140 [ 596.985530][T13267] ? __pfx_kthread+0x10/0x10 [ 596.985549][T13267] ret_from_fork+0x599/0xb30 [ 596.985574][T13267] ? __pfx_ret_from_fork+0x10/0x10 [ 596.985607][T13267] ? __switch_to_asm+0x39/0x70 [ 596.985624][T13267] ? __switch_to_asm+0x33/0x70 [ 596.985640][T13267] ? __pfx_kthread+0x10/0x10 [ 596.985659][T13267] ret_from_fork_asm+0x1a/0x30 ** 34 printk messages dropped ** [ 597.119567][T13267] hci_event_packet+0x78f/0x1260 ** 52 printk messages dropped ** [ 597.124525][ T5147] hci_event_packet+0x78f/0x1260 [ 597.124551][ T5147] ? __pfx_hci_le_meta_evt+0x10/0x10 [ 597.124571][ T5147] ? __pfx_hci_event_packet+0x10/0x10 ** 2 printk messages dropped ** [ 597.124642][ T5147] ? hci_send_to_monitor+0xe2/0x590 ** 50 printk messages dropped ** [ 597.219199][T13267] ? skb_pull_data+0xfb/0x200 [ 597.219223][T13267] hci_le_enh_conn_complete_evt+0x189/0x4a0 [ 597.219244][T13267] ? __pfx_hci_le_enh_conn_complete_evt+0x10/0x10 [ 597.219268][T13267] hci_event_packet+0x78f/0x1260 [ 597.219295][T13267] ? __pfx_hci_le_meta_evt+0x10/0x10 [ 597.219315][T13267] ? __pfx_hci_event_packet+0x10/0x10 [ 597.219342][T13267] ? kcov_remote_start+0x18e/0x7f0 [ 597.219361][T13267] ? lockdep_hardirqs_on+0x98/0x140 [ 597.219387][T13267] ? hci_send_to_monitor+0xe2/0x590 [ 597.219410][T13267] hci_rx_work+0x3ee/0x1060 ** 46 printk messages dropped ** [ 597.221356][ T5147] hci_event_packet+0x78f/0x1260 ** 1 printk messages dropped ** [ 597.221404][ T5147] ? __pfx_hci_event_packet+0x10/0x10 ** 1 printk messages dropped ** [ 597.221449][ T5147] ? lockdep_hardirqs_on+0x98/0x140 ** 50 printk messages dropped ** [ 597.246498][T11292] hci_event_packet+0x78f/0x1260 [ 597.246525][T11292] ? __pfx_hci_le_meta_evt+0x10/0x10 [ 597.246545][T11292] ? __pfx_hci_event_packet+0x10/0x10 [ 597.246572][T11292] ? kcov_remote_start+0x18e/0x7f0 [ 597.246591][T11292] ? lockdep_hardirqs_on+0x98/0x140 [ 597.246617][T11292] ? hci_send_to_monitor+0xe2/0x590 [ 597.246639][T11292] hci_rx_work+0x3ee/0x1060 [ 597.246673][T11292] ? process_one_work+0x868/0x15a0 [ 597.246694][T11292] process_one_work+0x93a/0x15a0 [ 597.246738][T11292] ? __pfx_process_one_work+0x10/0x10 [ 597.246769][T11292] ? assign_work+0x3a1/0x410 [ 597.246801][T11292] worker_thread+0x9b0/0xee0 [ 597.246850][T11292] kthread+0x711/0x8a0 [ 597.246872][T11292] ? __pfx_worker_thread+0x10/0x10 [ 597.246895][T11292] ? __pfx_kthread+0x10/0x10 [ 597.246915][T11292] ? _raw_spin_unlock_irq+0x23/0x50 [ 597.246936][T11292] ? lockdep_hardirqs_on+0x98/0x140 [ 597.246956][T11292] ? __pfx_kthread+0x10/0x10 [ 597.246976][T11292] ret_from_fork+0x599/0xb30 [ 597.247001][T11292] ? __pfx_ret_from_fork+0x10/0x10 [ 597.247033][T11292] ? __switch_to_asm+0x39/0x70 [ 597.247049][T11292] ? __switch_to_asm+0x33/0x70 [ 597.247066][T11292] ? __pfx_kthread+0x10/0x10 [ 597.247085][T11292] ret_from_fork_asm+0x1a/0x30 [ 597.247121][T11292] [ 597.247184][T11292] kobject: kobject_add_internal failed for hci7:0 with -EEXIST, don't try to register things with the same name in the same directory. [ 597.270605][ T31] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 597.273566][T13267] Bluetooth: hci6: failed to register connection device [ 597.347201][T11292] Bluetooth: hci7: failed to register connection device [ 597.350722][ T31] RIP: 0033:0x7fac0ed9148a ** 25 printk messages dropped ** [ 597.419825][T11292] ? __pfx___mutex_unlock_slowpath+0x10/0x10 ** 1 printk messages dropped ** [ 597.419873][T11292] hci_le_enh_conn_complete_evt+0x189/0x4a0 [ 597.419898][T11292] ? __pfx_hci_le_enh_conn_complete_evt+0x10/0x10 ** 51 printk messages dropped ** [ 597.473569][T13267] ? __pfx___mutex_unlock_slowpath+0x10/0x10 ** 1 printk messages dropped ** [ 597.473615][T13267] hci_le_enh_conn_complete_evt+0x189/0x4a0 [ 597.473636][T13267] ? __pfx_hci_le_enh_conn_complete_evt+0x10/0x10 ** 51 printk messages dropped ** [ 597.524578][T11292] ? __pfx___mutex_unlock_slowpath+0x10/0x10 ** 2 printk messages dropped ** [ 597.524645][T11292] ? __pfx_hci_le_enh_conn_complete_evt+0x10/0x10 [ 597.524668][T11292] hci_event_packet+0x78f/0x1260 [ 597.524696][T11292] ? __pfx_hci_le_meta_evt+0x10/0x10 [ 597.524716][T11292] ? __pfx_hci_event_packet+0x10/0x10 [ 597.524742][T11292] ? kcov_remote_start+0x18e/0x7f0 [ 597.524762][T11292] ? lockdep_hardirqs_on+0x98/0x140 [ 597.524788][T11292] ? hci_send_to_monitor+0xe2/0x590 [ 597.524810][T11292] hci_rx_work+0x3ee/0x1060 [ 597.524844][T11292] ? process_one_work+0x868/0x15a0 [ 597.524866][T11292] process_one_work+0x93a/0x15a0 [ 597.524910][T11292] ? __pfx_process_one_work+0x10/0x10 [ 597.524941][T11292] ? assign_work+0x3a1/0x410 [ 597.524968][T11292] worker_thread+0x9b0/0xee0 [ 597.525016][T11292] kthread+0x711/0x8a0 [ 597.525038][T11292] ? __pfx_worker_thread+0x10/0x10 [ 597.525066][T11292] ? __pfx_kthread+0x10/0x10 [ 597.525087][T11292] ? _raw_spin_unlock_irq+0x23/0x50 [ 597.525108][T11292] ? lockdep_hardirqs_on+0x98/0x140 [ 597.525129][T11292] ? __pfx_kthread+0x10/0x10 [ 597.525148][T11292] ret_from_fork+0x599/0xb30 [ 597.525174][T11292] ? __pfx_ret_from_fork+0x10/0x10 [ 597.525206][T11292] ? __switch_to_asm+0x39/0x70 [ 597.525223][T11292] ? __switch_to_asm+0x33/0x70 [ 597.525240][T11292] ? __pfx_kthread+0x10/0x10 [ 597.525260][T11292] ret_from_fork_asm+0x1a/0x30 [ 597.525295][T11292] ** 26 printk messages dropped ** [ 597.637227][T11292] ? __pfx_kobject_add+0x10/0x10 ** 51 printk messages dropped ** [ 597.713610][T13267] ? do_raw_spin_unlock+0x122/0x240 [ 597.713635][T13267] kobject_add_internal+0x6ab/0xcc0 ** 1 printk messages dropped ** [ 597.713685][T13267] ? __pfx_kobject_add+0x10/0x10 ** 1 printk messages dropped ** [ 597.713737][T13267] ? get_device_parent+0x366/0x3a0 [ 597.713761][T13267] device_add+0x408/0xb80 [ 597.713790][T13267] hci_conn_add_sysfs+0xd5/0x210 [ 597.713816][T13267] le_conn_complete_evt+0xf1d/0x1420 [ 597.713846][T13267] ? __pfx_le_conn_complete_evt+0x10/0x10 ** 48 printk messages dropped ** [ 597.788806][T13267] ? do_raw_spin_unlock+0x122/0x240 [ 597.788831][T13267] kobject_add_internal+0x6ab/0xcc0 [ 597.788857][T13267] kobject_add+0x155/0x220 [ 597.788880][T13267] ? __pfx_kobject_add+0x10/0x10 [ 597.788906][T13267] ? _raw_spin_unlock+0x28/0x50 [ 597.788931][T13267] ? get_device_parent+0x366/0x3a0 [ 597.788954][T13267] device_add+0x408/0xb80 [ 597.788977][T13267] hci_conn_add_sysfs+0xd5/0x210 ** 35 printk messages dropped ** [ 597.814073][T11292] CPU: 0 UID: 0 PID: 11292 Comm: kworker/u9:10 Not tainted syzkaller #0 PREEMPT(full) ** 9 printk messages dropped ** [ 597.814276][T11292] sysfs_create_dir_ns+0x259/0x280 [ 597.814302][T11292] ? __pfx_sysfs_create_dir_ns+0x10/0x10 [ 597.814328][T11292] ? do_raw_spin_unlock+0x122/0x240 [ 597.814352][T11292] kobject_add_internal+0x6ab/0xcc0 [ 597.814378][T11292] kobject_add+0x155/0x220 [ 597.814401][T11292] ? __pfx_kobject_add+0x10/0x10 [ 597.814427][T11292] ? _raw_spin_unlock+0x28/0x50 [ 597.814451][T11292] ? get_device_parent+0x366/0x3a0 [ 597.814475][T11292] device_add+0x408/0xb80 [ 597.814498][T11292] hci_conn_add_sysfs+0xd5/0x210 [ 597.814524][T11292] le_conn_complete_evt+0xf1d/0x1420 [ 597.814553][T11292] ? __pfx_le_conn_complete_evt+0x10/0x10 [ 597.814570][T11292] ? __mutex_unlock_slowpath+0x1a1/0x730 [ 597.814600][T11292] ? __pfx___mutex_unlock_slowpath+0x10/0x10 [ 597.814623][T11292] ? skb_pull_data+0xfb/0x200 [ 597.814646][T11292] hci_le_enh_conn_complete_evt+0x189/0x4a0 [ 597.814667][T11292] ? __pfx_hci_le_enh_conn_complete_evt+0x10/0x10 [ 597.814691][T11292] hci_event_packet+0x78f/0x1260 [ 597.814718][T11292] ? __pfx_hci_le_meta_evt+0x10/0x10 [ 597.814738][T11292] ? __pfx_hci_event_packet+0x10/0x10 [ 597.814764][T11292] ? kcov_remote_start+0x18e/0x7f0 [ 597.814783][T11292] ? lockdep_hardirqs_on+0x98/0x140 ** 38 printk messages dropped ** [ 597.957938][T11292] ? do_raw_spin_unlock+0x122/0x240 ** 47 printk messages dropped ** [ 598.063527][T11292] Workqueue: hci6 hci_rx_work ** 1 printk messages dropped ** [ 598.063563][T11292] ** 1 printk messages dropped ** [ 598.063594][T11292] ? __pfx_dump_stack_lvl+0x10/0x10 [ 598.063612][T11292] ? __pfx__printk+0x10/0x10 [ 598.063643][T11292] ? kernfs_path_from_node+0x250/0x290 [ 598.063666][T11292] ? kernfs_path_from_node+0x2f/0x290 [ 598.063693][T11292] sysfs_create_dir_ns+0x259/0x280 [ 598.063719][T11292] ? __pfx_sysfs_create_dir_ns+0x10/0x10 [ 598.063744][T11292] ? do_raw_spin_unlock+0x122/0x240 [ 598.063769][T11292] kobject_add_internal+0x6ab/0xcc0 [ 598.063795][T11292] kobject_add+0x155/0x220 [ 598.063818][T11292] ? __pfx_kobject_add+0x10/0x10 [ 598.063844][T11292] ? _raw_spin_unlock+0x28/0x50 [ 598.063868][T11292] ? get_device_parent+0x366/0x3a0 ** 46 printk messages dropped ** [ 598.083874][T13267] ? __pfx_sysfs_create_dir_ns+0x10/0x10 [ 598.083899][T13267] ? do_raw_spin_unlock+0x122/0x240 [ 598.083924][T13267] kobject_add_internal+0x6ab/0xcc0 [ 598.083950][T13267] kobject_add+0x155/0x220 ** 50 printk messages dropped ** [ 598.236356][T11292] ? __pfx__printk+0x10/0x10 ** 1 printk messages dropped ** [ 598.236410][T11292] ? kernfs_path_from_node+0x2f/0x290 ** 1 printk messages dropped ** [ 598.236463][T11292] ? __pfx_sysfs_create_dir_ns+0x10/0x10 ** 52 printk messages dropped ** [ 598.239835][T13267] ? __pfx_sysfs_create_dir_ns+0x10/0x10 [ 598.239861][T13267] ? do_raw_spin_unlock+0x122/0x240 [ 598.239885][T13267] kobject_add_internal+0x6ab/0xcc0 [ 598.239911][T13267] kobject_add+0x155/0x220 [ 598.239933][T13267] ? __pfx_kobject_add+0x10/0x10 [ 598.239959][T13267] ? _raw_spin_unlock+0x28/0x50 [ 598.239983][T13267] ? get_device_parent+0x366/0x3a0 [ 598.240006][T13267] device_add+0x408/0xb80 [ 598.240029][T13267] hci_conn_add_sysfs+0xd5/0x210 ** 45 printk messages dropped ** [ 598.264220][T11292] ? kernfs_path_from_node+0x2f/0x290 ** 1 printk messages dropped ** [ 598.264274][T11292] ? __pfx_sysfs_create_dir_ns+0x10/0x10 ** 1 printk messages dropped ** [ 598.264324][T11292] kobject_add_internal+0x6ab/0xcc0 ** 50 printk messages dropped ** [ 598.289756][T13267] ? kernfs_path_from_node+0x2f/0x290 [ 598.289783][T13267] sysfs_create_dir_ns+0x259/0x280 [ 598.289809][T13267] ? __pfx_sysfs_create_dir_ns+0x10/0x10 [ 598.289834][T13267] ? do_raw_spin_unlock+0x122/0x240 [ 598.289859][T13267] kobject_add_internal+0x6ab/0xcc0 ** 56 printk messages dropped ** [ 598.348707][T11292] ? __pfx_kobject_add+0x10/0x10 [ 598.348733][T11292] ? _raw_spin_unlock+0x28/0x50 [ 598.348758][T11292] ? get_device_parent+0x366/0x3a0 [ 598.348783][T11292] device_add+0x408/0xb80 [ 598.348805][T11292] hci_conn_add_sysfs+0xd5/0x210 [ 598.348833][T11292] le_conn_complete_evt+0xf1d/0x1420 [ 598.348862][T11292] ? __pfx_le_conn_complete_evt+0x10/0x10 [ 598.348880][T11292] ? __mutex_unlock_slowpath+0x1a1/0x730 [ 598.348910][T11292] ? __pfx___mutex_unlock_slowpath+0x10/0x10 [ 598.348933][T11292] ? skb_pull_data+0xfb/0x200 [ 598.348957][T11292] hci_le_enh_conn_complete_evt+0x189/0x4a0 [ 598.348985][T11292] ? __pfx_hci_le_enh_conn_complete_evt+0x10/0x10 [ 598.349008][T11292] hci_event_packet+0x78f/0x1260 [ 598.349036][T11292] ? __pfx_hci_le_meta_evt+0x10/0x10 [ 598.349058][T11292] ? __pfx_hci_event_packet+0x10/0x10 ** 40 printk messages dropped ** [ 598.467315][T11292] ? do_raw_spin_unlock+0x122/0x240 ** 53 printk messages dropped ** [ 598.476111][T13267] kobject_add_internal+0x6ab/0xcc0 [ 598.476137][T13267] kobject_add+0x155/0x220 [ 598.476160][T13267] ? __pfx_kobject_add+0x10/0x10 [ 598.476190][T13267] ? _raw_spin_unlock+0x28/0x50 [ 598.476214][T13267] ? get_device_parent+0x366/0x3a0 ** 50 printk messages dropped ** [ 598.533705][T11292] ? __pfx_sysfs_create_dir_ns+0x10/0x10 [ 598.533731][T11292] ? do_raw_spin_unlock+0x122/0x240 [ 598.533755][T11292] kobject_add_internal+0x6ab/0xcc0 [ 598.533782][T11292] kobject_add+0x155/0x220 [ 598.533805][T11292] ? __pfx_kobject_add+0x10/0x10 [ 598.533831][T11292] ? _raw_spin_unlock+0x28/0x50 [ 598.533857][T11292] ? get_device_parent+0x366/0x3a0 [ 598.533881][T11292] device_add+0x408/0xb80 [ 598.533905][T11292] hci_conn_add_sysfs+0xd5/0x210 [ 598.533932][T11292] le_conn_complete_evt+0xf1d/0x1420 [ 598.533967][T11292] ? __pfx_le_conn_complete_evt+0x10/0x10 [ 598.533985][T11292] ? __mutex_unlock_slowpath+0x1a1/0x730 [ 598.534015][T11292] ? __pfx___mutex_unlock_slowpath+0x10/0x10 [ 598.534038][T11292] ? skb_pull_data+0xfb/0x200 [ 598.534063][T11292] hci_le_enh_conn_complete_evt+0x189/0x4a0 [ 598.534084][T11292] ? __pfx_hci_le_enh_conn_complete_evt+0x10/0x10 [ 598.534108][T11292] hci_event_packet+0x78f/0x1260 [ 598.534135][T11292] ? __pfx_hci_le_meta_evt+0x10/0x10 [ 598.534157][T11292] ? __pfx_hci_event_packet+0x10/0x10 [ 598.534183][T11292] ? kcov_remote_start+0x18e/0x7f0 [ 598.534203][T11292] ? lockdep_hardirqs_on+0x98/0x140 [ 598.534229][T11292] ? hci_send_to_monitor+0xe2/0x590 [ 598.534253][T11292] hci_rx_work+0x3ee/0x1060 [ 598.534287][T11292] ? process_one_work+0x868/0x15a0 [ 598.534308][T11292] process_one_work+0x93a/0x15a0 [ 598.534353][T11292] ? __pfx_process_one_work+0x10/0x10 [ 598.534384][T11292] ? assign_work+0x3a1/0x410 ** 32 printk messages dropped ** [ 598.574600][T11292] ? do_raw_spin_unlock+0x122/0x240 ** 53 printk messages dropped ** [ 598.652436][T13267] sysfs_create_dir_ns+0x259/0x280 [ 598.652462][T13267] ? __pfx_sysfs_create_dir_ns+0x10/0x10 ** 1 printk messages dropped ** [ 598.652512][T13267] kobject_add_internal+0x6ab/0xcc0 [ 598.652539][T13267] kobject_add+0x155/0x220 [ 598.652562][T13267] ? __pfx_kobject_add+0x10/0x10 [ 598.652587][T13267] ? _raw_spin_unlock+0x28/0x50 [ 598.652612][T13267] ? get_device_parent+0x366/0x3a0 [ 598.652635][T13267] device_add+0x408/0xb80 [ 598.652659][T13267] hci_conn_add_sysfs+0xd5/0x210 [ 598.652694][T13267] le_conn_complete_evt+0xf1d/0x1420 [ 598.652724][T13267] ? __pfx_le_conn_complete_evt+0x10/0x10 [ 598.652742][T13267] ? __mutex_unlock_slowpath+0x1a1/0x730 [ 598.652773][T13267] ? __pfx___mutex_unlock_slowpath+0x10/0x10 [ 598.652796][T13267] ? skb_pull_data+0xfb/0x200 [ 598.652820][T13267] hci_le_enh_conn_complete_evt+0x189/0x4a0 [ 598.652841][T13267] ? __pfx_hci_le_enh_conn_complete_evt+0x10/0x10 [ 598.652864][T13267] hci_event_packet+0x78f/0x1260 [ 598.652892][T13267] ? __pfx_hci_le_meta_evt+0x10/0x10 [ 598.652913][T13267] ? __pfx_hci_event_packet+0x10/0x10 [ 598.652939][T13267] ? kcov_remote_start+0x18e/0x7f0 [ 598.652958][T13267] ? lockdep_hardirqs_on+0x98/0x140 [ 598.652983][T13267] ? hci_send_to_monitor+0xe2/0x590 [ 598.653006][T13267] hci_rx_work+0x3ee/0x1060 [ 598.653040][T13267] ? process_one_work+0x868/0x15a0 ** 34 printk messages dropped ** [ 598.719164][T11292] kobject_add+0x155/0x220 [ 598.719187][T11292] ? __pfx_kobject_add+0x10/0x10 [ 598.719213][T11292] ? _raw_spin_unlock+0x28/0x50 ** 44 printk messages dropped ** [ 598.735687][ T31] #2: ffff88807c668ec0 (&hdev->req_lock){+.+.}-{4:4}, at: hci_cmd_sync_work+0x1d3/0x400 [ 598.735743][ T31] 3 locks held by kworker/u9:3/5978: [ 598.735755][ T31] #0: ffff888057c3e948 ((wq_completion)hci6){+.+.}-{0:0}, at: process_one_work+0x841/0x15a0 2025/12/02 02:19:23 executed programs: 4532 [ 598.735807][ T31] #1: ffffc9000412fb80 ((work_completion)(&hdev->cmd_sync_work)){+.+.}-{0:0}, at: process_one_work+0x868/0x15a0 [ 598.735862][ T31] #2: ffff88807ef20ec0 (&hdev->req_lock){+.+.}-{4:4}, at: hci_cmd_sync_work+0x1d3/0x400 [ 598.735916][ T31] 3 locks held by kworker/u9:4/5979: [ 598.735927][ T31] #0: ffff88801e7c2148 ((wq_completion)hci4){+.+.}-{0:0}, at: process_one_work+0x841/0x15a0 [ 598.735982][ T31] #1: ffffc900040afb80 ((work_completion)(&hdev->cmd_sync_work)){+.+.}-{0:0}, at: process_one_work+0x868/0x15a0 [ 598.736036][ T31] #2: ffff888054900ec0 (&hdev->req_lock){+.+.}-{4:4}, at: hci_cmd_sync_work+0x1d3/0x400 [ 598.736093][ T31] 3 locks held by kworker/u9:5/6113: [ 598.736106][ T31] #0: ffff8880296d3148 ((wq_completion)hci2){+.+.}-{0:0}, at: process_one_work+0x841/0x15a0 [ 598.736160][ T31] #1: ffffc90002f17b80 ( [ 598.754861][T11292] Bluetooth: hci7: failed to register connection device [ 598.774934][T13267] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci6/hci6:0' [ 598.775828][T11292] Bluetooth: hci7: command 0x2016 tx timeout [ 598.786266][T13267] CPU: 1 UID: 0 PID: 13267 Comm: kworker/u9:12 Not tainted syzkaller #0 PREEMPT(full) ** 22 printk messages dropped ** [ 598.786805][T13267] ? __pfx___mutex_unlock_slowpath+0x10/0x10 ** 11 printk messages dropped ** [ 598.787095][T13267] process_one_work+0x93a/0x15a0 ** 50 printk messages dropped ** [ 598.813965][ T5147] ? lockdep_hardirqs_on+0x98/0x140 ** 1 printk messages dropped ** [ 598.814015][ T5147] hci_rx_work+0x3ee/0x1060 [ 598.814048][ T5147] ? process_one_work+0x868/0x15a0 [ 598.814070][ T5147] process_one_work+0x93a/0x15a0 [ 598.814114][ T5147] ? __pfx_process_one_work+0x10/0x10 [ 598.814145][ T5147] ? assign_work+0x3a1/0x410 [ 598.814173][ T5147] worker_thread+0x9b0/0xee0 [ 598.814221][ T5147] kthread+0x711/0x8a0 [ 598.814242][ T5147] ? __pfx_worker_thread+0x10/0x10 [ 598.814265][ T5147] ? __pfx_kthread+0x10/0x10 [ 598.814285][ T5147] ? _raw_spin_unlock_irq+0x23/0x50 [ 598.814307][ T5147] ? lockdep_hardirqs_on+0x98/0x140 [ 598.814328][ T5147] ? __pfx_kthread+0x10/0x10 [ 598.814347][ T5147] ret_from_fork+0x599/0xb30 [ 598.814373][ T5147] ? __pfx_ret_from_fork+0x10/0x10 [ 598.814406][ T5147] ? __switch_to_asm+0x39/0x70 [ 598.814423][ T5147] ? __switch_to_asm+0x33/0x70 [ 598.814439][ T5147] ? __pfx_kthread+0x10/0x10 [ 598.814459][ T5147] ret_from_fork_asm+0x1a/0x30 [ 598.814494][ T5147] [ 598.814519][ T5147] kobject: kobject_add_internal failed for hci5:0 with -EEXIST, don't try to register things with the same name in the same directory. [ 598.909859][ T31] (work_completion)(&hdev->cmd_sync_work) [ 598.915058][ T5147] Bluetooth: hci5: failed to register connection device [ 598.926909][ T31] ){+.+.}-{0:0} [ 598.959143][ T5147] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci6/hci6:0' [ 599.020657][T11292] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci4/hci4:0' [ 599.026876][ T5147] CPU: 0 UID: 0 PID: 5147 Comm: kworker/u9:1 Not tainted syzkaller #0 PREEMPT(full) [ 599.026908][ T5147] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 [ 599.026922][ T5147] Workqueue: hci6 hci_rx_work [ 599.026949][ T5147] Call Trace: [ 599.026957][ T5147] ** 27 printk messages dropped ** [ 599.027636][ T5147] ? hci_send_to_monitor+0xe2/0x590 ** 52 printk messages dropped ** [ 599.045702][T11292] ? hci_send_to_monitor+0xe2/0x590 ** 1 printk messages dropped ** [ 599.045758][T11292] ? process_one_work+0x868/0x15a0 [ 599.045780][T11292] process_one_work+0x93a/0x15a0 [ 599.045824][T11292] ? __pfx_process_one_work+0x10/0x10 [ 599.045855][T11292] ? assign_work+0x3a1/0x410 [ 599.045882][T11292] worker_thread+0x9b0/0xee0 [ 599.045930][T11292] kthread+0x711/0x8a0 [ 599.045952][T11292] ? __pfx_worker_thread+0x10/0x10 [ 599.045974][T11292] ? __pfx_kthread+0x10/0x10 [ 599.045995][T11292] ? _raw_spin_unlock_irq+0x23/0x50 [ 599.046016][T11292] ? lockdep_hardirqs_on+0x98/0x140 [ 599.046037][T11292] ? __pfx_kthread+0x10/0x10 [ 599.046056][T11292] ret_from_fork+0x599/0xb30 [ 599.046081][T11292] ? __pfx_ret_from_fork+0x10/0x10 [ 599.046114][T11292] ? __switch_to_asm+0x39/0x70 ** 42 printk messages dropped ** [ 599.107869][ T5147] hci_rx_work+0x3ee/0x1060 ** 49 printk messages dropped ** [ 599.170463][ T5147] ? __pfx_hci_le_enh_conn_complete_evt+0x10/0x10 ** 1 printk messages dropped ** [ 599.170514][ T5147] ? __pfx_hci_le_meta_evt+0x10/0x10 [ 599.170534][ T5147] ? __pfx_hci_event_packet+0x10/0x10 [ 599.170561][ T5147] ? kcov_remote_start+0x18e/0x7f0 [ 599.170587][ T5147] ? lockdep_hardirqs_on+0x98/0x140 [ 599.170613][ T5147] ? hci_send_to_monitor+0xe2/0x590 [ 599.170636][ T5147] hci_rx_work+0x3ee/0x1060 [ 599.170670][ T5147] ? process_one_work+0x868/0x15a0 [ 599.170692][ T5147] process_one_work+0x93a/0x15a0 [ 599.170736][ T5147] ? __pfx_process_one_work+0x10/0x10 [ 599.170767][ T5147] ? assign_work+0x3a1/0x410 [ 599.170794][ T5147] worker_thread+0x9b0/0xee0 [ 599.170841][ T5147] kthread+0x711/0x8a0 [ 599.170862][ T5147] ? __pfx_worker_thread+0x10/0x10 [ 599.170885][ T5147] ? __pfx_kthread+0x10/0x10 [ 599.170906][ T5147] ? _raw_spin_unlock_irq+0x23/0x50 [ 599.170927][ T5147] ? lockdep_hardirqs_on+0x98/0x140 [ 599.170947][ T5147] ? __pfx_kthread+0x10/0x10 [ 599.170967][ T5147] ret_from_fork+0x599/0xb30 ** 40 printk messages dropped ** [ 599.177223][T11292] hci_rx_work+0x3ee/0x1060 [ 599.177258][T11292] ? process_one_work+0x868/0x15a0 [ 599.177279][T11292] process_one_work+0x93a/0x15a0 [ 599.177323][T11292] ? __pfx_process_one_work+0x10/0x10 [ 599.177354][T11292] ? assign_work+0x3a1/0x410 [ 599.177381][T11292] worker_thread+0x9b0/0xee0 [ 599.177429][T11292] kthread+0x711/0x8a0 [ 599.177451][T11292] ? __pfx_worker_thread+0x10/0x10 [ 599.177473][T11292] ? __pfx_kthread+0x10/0x10 [ 599.177493][T11292] ? _raw_spin_unlock_irq+0x23/0x50 [ 599.177515][T11292] ? lockdep_hardirqs_on+0x98/0x140 [ 599.177535][T11292] ? __pfx_kthread+0x10/0x10 [ 599.177555][T11292] ret_from_fork+0x599/0xb30 [ 599.177579][T11292] ? __pfx_ret_from_fork+0x10/0x10 [ 599.177611][T11292] ? __switch_to_asm+0x39/0x70 [ 599.177628][T11292] ? __switch_to_asm+0x33/0x70 ** 41 printk messages dropped ** [ 599.249640][T11292] ? lockdep_hardirqs_on+0x98/0x140 [ 599.249666][T11292] ? hci_send_to_monitor+0xe2/0x590 [ 599.249690][T11292] hci_rx_work+0x3ee/0x1060 [ 599.249724][T11292] ? process_one_work+0x868/0x15a0 [ 599.249745][T11292] process_one_work+0x93a/0x15a0 [ 599.249790][T11292] ? __pfx_process_one_work+0x10/0x10 ** 7 printk messages dropped ** [ 599.250010][T11292] ? __pfx_kthread+0x10/0x10 ** 40 printk messages dropped ** [ 599.371086][T11292] hci_event_packet+0x78f/0x1260 ** 1 printk messages dropped ** [ 599.371135][T11292] ? __pfx_hci_event_packet+0x10/0x10 [ 599.371161][T11292] ? kcov_remote_start+0x18e/0x7f0 [ 599.371180][T11292] ? lockdep_hardirqs_on+0x98/0x140 [ 599.371206][T11292] ? hci_send_to_monitor+0xe2/0x590 [ 599.371230][T11292] hci_rx_work+0x3ee/0x1060 [ 599.371264][T11292] ? process_one_work+0x868/0x15a0 [ 599.371285][T11292] process_one_work+0x93a/0x15a0 [ 599.371329][T11292] ? __pfx_process_one_work+0x10/0x10 [ 599.371360][T11292] ? assign_work+0x3a1/0x410 [ 599.371388][T11292] worker_thread+0x9b0/0xee0 [ 599.371436][T11292] kthread+0x711/0x8a0 [ 599.371459][T11292] ? __pfx_worker_thread+0x10/0x10 [ 599.371480][T11292] ? __pfx_kthread+0x10/0x10 [ 599.371500][T11292] ? _raw_spin_unlock_irq+0x23/0x50 [ 599.371522][T11292] ? lockdep_hardirqs_on+0x98/0x140 [ 599.371543][T11292] ? __pfx_kthread+0x10/0x10 [ 599.371562][T11292] ret_from_fork+0x599/0xb30 [ 599.371586][T11292] ? __pfx_ret_from_fork+0x10/0x10 [ 599.371618][T11292] ? __switch_to_asm+0x39/0x70 ** 38 printk messages dropped ** [ 599.424668][ T5147] hci_rx_work+0x3ee/0x1060 [ 599.424703][ T5147] ? process_one_work+0x868/0x15a0 ** 49 printk messages dropped ** [ 599.565026][ T5147] ? __pfx_hci_le_enh_conn_complete_evt+0x10/0x10 [ 599.565050][ T5147] hci_event_packet+0x78f/0x1260 ** 1 printk messages dropped ** [ 599.565098][ T5147] ? __pfx_hci_event_packet+0x10/0x10 [ 599.565124][ T5147] ? kcov_remote_start+0x18e/0x7f0 [ 599.565143][ T5147] ? lockdep_hardirqs_on+0x98/0x140 [ 599.565169][ T5147] ? hci_send_to_monitor+0xe2/0x590 [ 599.565192][ T5147] hci_rx_work+0x3ee/0x1060 [ 599.565226][ T5147] ? process_one_work+0x868/0x15a0 [ 599.565248][ T5147] process_one_work+0x93a/0x15a0 [ 599.565292][ T5147] ? __pfx_process_one_work+0x10/0x10 [ 599.565323][ T5147] ? assign_work+0x3a1/0x410 [ 599.565350][ T5147] worker_thread+0x9b0/0xee0 [ 599.565398][ T5147] kthread+0x711/0x8a0 [ 599.565419][ T5147] ? __pfx_worker_thread+0x10/0x10 [ 599.565442][ T5147] ? __pfx_kthread+0x10/0x10 [ 599.565462][ T5147] ? _raw_spin_unlock_irq+0x23/0x50 [ 599.565483][ T5147] ? lockdep_hardirqs_on+0x98/0x140 [ 599.565504][ T5147] ? __pfx_kthread+0x10/0x10 [ 599.565523][ T5147] ret_from_fork+0x599/0xb30 [ 599.565554][ T5147] ? __pfx_ret_from_fork+0x10/0x10 [ 599.565587][ T5147] ? __switch_to_asm+0x39/0x70 [ 599.565603][ T5147] ? __switch_to_asm+0x33/0x70 [ 599.565619][ T5147] ? __pfx_kthread+0x10/0x10 [ 599.565639][ T5147] ret_from_fork_asm+0x1a/0x30 ** 35 printk messages dropped ** [ 599.570081][T11292] hci_rx_work+0x3ee/0x1060 ** 51 printk messages dropped ** [ 599.810278][ T5147] ? __pfx_hci_le_enh_conn_complete_evt+0x10/0x10 [ 599.810302][ T5147] hci_event_packet+0x78f/0x1260 [ 599.810329][ T5147] ? __pfx_hci_le_meta_evt+0x10/0x10 [ 599.810350][ T5147] ? __pfx_hci_event_packet+0x10/0x10 [ 599.810374][ T5147] ? kcov_remote_start+0x18e/0x7f0 [ 599.810394][ T5147] ? lockdep_hardirqs_on+0x98/0x140 [ 599.810420][ T5147] ? hci_send_to_monitor+0xe2/0x590 [ 599.810443][ T5147] hci_rx_work+0x3ee/0x1060 [ 599.810476][ T5147] ? process_one_work+0x868/0x15a0 [ 599.810506][ T5147] process_one_work+0x93a/0x15a0 [ 599.810550][ T5147] ? __pfx_process_one_work+0x10/0x10 [ 599.810581][ T5147] ? assign_work+0x3a1/0x410 [ 599.810608][ T5147] worker_thread+0x9b0/0xee0 [ 599.810657][ T5147] kthread+0x711/0x8a0 [ 599.810679][ T5147] ? __pfx_worker_thread+0x10/0x10 [ 599.810701][ T5147] ? __pfx_kthread+0x10/0x10 [ 599.810721][ T5147] ? _raw_spin_unlock_irq+0x23/0x50 [ 599.810742][ T5147] ? lockdep_hardirqs_on+0x98/0x140 [ 599.810762][ T5147] ? __pfx_kthread+0x10/0x10 [ 599.810781][ T5147] ret_from_fork+0x599/0xb30 [ 599.810805][ T5147] ? __pfx_ret_from_fork+0x10/0x10 [ 599.810838][ T5147] ? __switch_to_asm+0x39/0x70 [ 599.810855][ T5147] ? __switch_to_asm+0x33/0x70 [ 599.810871][ T5147] ? __pfx_kthread+0x10/0x10 [ 599.810890][ T5147] ret_from_fork_asm+0x1a/0x30 [ 599.810926][ T5147] [ 599.810953][ T5147] kobject: kobject_add_internal failed for hci7:0 with -EEXIST, don't try to register things with the same name in the same directory. [ 599.855006][T15152] Bluetooth: hci5: command 0x2016 tx timeout [ 599.872270][T15152] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci5/hci5:0' [ 599.886283][ T5147] Bluetooth: hci7: failed to register connection device [ 599.890884][T15152] CPU: 1 UID: 0 PID: 15152 Comm: kworker/u9:13 Not tainted syzkaller #0 PREEMPT(full) [ 599.890909][T15152] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 ** 26 printk messages dropped ** [ 599.891531][T15152] ? __pfx_hci_le_meta_evt+0x10/0x10 [ 599.891553][T15152] ? __pfx_hci_event_packet+0x10/0x10 ** 49 printk messages dropped ** [ 599.911794][ T5147] ? skb_pull_data+0xfb/0x200 ** 1 printk messages dropped ** [ 599.911839][ T5147] ? __pfx_hci_le_enh_conn_complete_evt+0x10/0x10 [ 599.911863][ T5147] hci_event_packet+0x78f/0x1260 ** 1 printk messages dropped ** [ 599.911912][ T5147] ? __pfx_hci_event_packet+0x10/0x10 [ 599.911938][ T5147] ? kcov_remote_start+0x18e/0x7f0 [ 599.911957][ T5147] ? lockdep_hardirqs_on+0x98/0x140 [ 599.911983][ T5147] ? hci_send_to_monitor+0xe2/0x590 [ 599.912006][ T5147] hci_rx_work+0x3ee/0x1060 [ 599.912040][ T5147] ? process_one_work+0x868/0x15a0 [ 599.912062][ T5147] process_one_work+0x93a/0x15a0 [ 599.912105][ T5147] ? __pfx_process_one_work+0x10/0x10 [ 599.912136][ T5147] ? assign_work+0x3a1/0x410 ** 7 printk messages dropped ** [ 599.912336][ T5147] ret_from_fork+0x599/0xb30 ** 38 printk messages dropped ** [ 600.398103][T12552] ? skb_pull_data+0xfb/0x200 ** 50 printk messages dropped ** [ 600.445976][T12552] ? do_raw_spin_unlock+0x122/0x240 ** 1 printk messages dropped ** [ 600.446028][T12552] kobject_add+0x155/0x220 [ 600.446050][T12552] ? __pfx_kobject_add+0x10/0x10 [ 600.446076][T12552] ? _raw_spin_unlock+0x28/0x50 [ 600.446100][T12552] ? get_device_parent+0x366/0x3a0 [ 600.446124][T12552] device_add+0x408/0xb80 [ 600.446147][T12552] hci_conn_add_sysfs+0xd5/0x210 [ 600.446173][T12552] le_conn_complete_evt+0xf1d/0x1420 [ 600.446206][T12552] ? __pfx_le_conn_complete_evt+0x10/0x10 [ 600.446224][T12552] ? __mutex_unlock_slowpath+0x1a1/0x730 [ 600.446255][T12552] ? __pfx___mutex_unlock_slowpath+0x10/0x10 [ 600.446277][T12552] ? skb_pull_data+0xfb/0x200 [ 600.446301][T12552] hci_le_enh_conn_complete_evt+0x189/0x4a0 [ 600.446321][T12552] ? __pfx_hci_le_enh_conn_complete_evt+0x10/0x10 [ 600.446345][T12552] hci_event_packet+0x78f/0x1260 [ 600.446372][T12552] ? __pfx_hci_le_meta_evt+0x10/0x10 [ 600.446393][T12552] ? __pfx_hci_event_packet+0x10/0x10 ** 37 printk messages dropped ** [ 600.554015][T12552] ? __pfx__printk+0x10/0x10 ** 2 printk messages dropped ** [ 600.554095][T12552] sysfs_create_dir_ns+0x259/0x280 ** 48 printk messages dropped ** [ 600.558678][ T31] 3 locks held by kworker/u9:9/11288: ** 1 printk messages dropped ** [ 600.558750][ T31] #1: ffffc9000411fb80 ((work_completion)(&hdev->cmd_sync_work)){+.+.}-{0:0}, at: process_one_work+0x868/0x15a0 [ 600.558805][ T31] #2: ffff888030d98ec0 (&hdev->req_lock){+.+.}-{4:4}, at: hci_cmd_sync_work+0x1d3/0x400 [ 600.558861][ T31] 3 locks held by kworker/u9:10/11292: [ 600.558873][ T31] #0: ffff88801e7c1148 ((wq_completion)hci4#2){+.+.}-{0:0}, at: process_one_work+0x841/0x15a0 [ 600.558934][ T31] #1: ffffc9000c69fb80 ((work_completion)(&hdev->rx_work)){+.+.}-{0:0}, at: process_one_work+0x868/0x15a0 [ 600.558989][ T31] #2: ffff8880549000c0 (&hdev->lock){+.+.}-{4:4}, at: hci_event_packet+0x162/0x1260 [ 600.559049][ T31] 7 locks held by kworker/u9:11/12552: ** 76 printk messages dropped ** [ 601.319093][T12552] ? __pfx_dump_stack_lvl+0x10/0x10 ** 18 printk messages dropped ** [ 601.319580][T12552] hci_le_enh_conn_complete_evt+0x189/0x4a0 [ 601.319601][T12552] ? __pfx_hci_le_enh_conn_complete_evt+0x10/0x10 ** 52 printk messages dropped ** [ 601.450918][T12552] ? __pfx_le_conn_complete_evt+0x10/0x10 [ 601.450935][T12552] ? __mutex_unlock_slowpath+0x1a1/0x730 [ 601.450966][T12552] ? __pfx___mutex_unlock_slowpath+0x10/0x10 [ 601.450989][T12552] ? skb_pull_data+0xfb/0x200 [ 601.451012][T12552] hci_le_enh_conn_complete_evt+0x189/0x4a0 ** 52 printk messages dropped ** [ 601.643218][T12552] le_conn_complete_evt+0xf1d/0x1420 [ 601.643247][T12552] ? __pfx_le_conn_complete_evt+0x10/0x10 [ 601.643264][T12552] ? __mutex_unlock_slowpath+0x1a1/0x730 [ 601.643296][T12552] ? __pfx___mutex_unlock_slowpath+0x10/0x10 [ 601.643318][T12552] ? skb_pull_data+0xfb/0x200 [ 601.643342][T12552] hci_le_enh_conn_complete_evt+0x189/0x4a0 [ 601.643363][T12552] ? __pfx_hci_le_enh_conn_complete_evt+0x10/0x10 [ 601.643393][T12552] hci_event_packet+0x78f/0x1260 [ 601.643420][T12552] ? __pfx_hci_le_meta_evt+0x10/0x10 [ 601.643441][T12552] ? __pfx_hci_event_packet+0x10/0x10 [ 601.643467][T12552] ? kcov_remote_start+0x18e/0x7f0 [ 601.643487][T12552] ? lockdep_hardirqs_on+0x98/0x140 [ 601.643513][T12552] ? hci_send_to_monitor+0xe2/0x590 [ 601.643536][T12552] hci_rx_work+0x3ee/0x1060 [ 601.643570][T12552] ? process_one_work+0x868/0x15a0 [ 601.643591][T12552] process_one_work+0x93a/0x15a0 [ 601.643635][T12552] ? __pfx_process_one_work+0x10/0x10 [ 601.643666][T12552] ? assign_work+0x3a1/0x410 [ 601.643693][T12552] worker_thread+0x9b0/0xee0 [ 601.643741][T12552] kthread+0x711/0x8a0 [ 601.643763][T12552] ? __pfx_worker_thread+0x10/0x10 [ 601.643786][T12552] ? __pfx_kthread+0x10/0x10 [ 601.643807][T12552] ? _raw_spin_unlock_irq+0x23/0x50 [ 601.643828][T12552] ? lockdep_hardirqs_on+0x98/0x140 [ 601.643849][T12552] ? __pfx_kthread+0x10/0x10 ** 35 printk messages dropped ** [ 601.759556][T12552] ? __mutex_unlock_slowpath+0x1a1/0x730 ** 2 printk messages dropped ** [ 601.759633][T12552] hci_le_enh_conn_complete_evt+0x189/0x4a0 [ 601.759654][T12552] ? __pfx_hci_le_enh_conn_complete_evt+0x10/0x10 [ 601.759678][T12552] hci_event_packet+0x78f/0x1260 [ 601.759706][T12552] ? __pfx_hci_le_meta_evt+0x10/0x10 [ 601.759727][T12552] ? __pfx_hci_event_packet+0x10/0x10 [ 601.759754][T12552] ? kcov_remote_start+0x18e/0x7f0 [ 601.759773][T12552] ? lockdep_hardirqs_on+0x98/0x140 ** 46 printk messages dropped ** [ 602.101149][T12552] le_conn_complete_evt+0xf1d/0x1420 [ 602.101178][T12552] ? __pfx_le_conn_complete_evt+0x10/0x10 [ 602.101196][T12552] ? __mutex_unlock_slowpath+0x1a1/0x730 [ 602.101226][T12552] ? __pfx___mutex_unlock_slowpath+0x10/0x10 [ 602.101248][T12552] ? skb_pull_data+0xfb/0x200 [ 602.101270][T12552] hci_le_enh_conn_complete_evt+0x189/0x4a0 [ 602.101290][T12552] ? __pfx_hci_le_enh_conn_complete_evt+0x10/0x10 [ 602.101314][T12552] hci_event_packet+0x78f/0x1260 [ 602.101341][T12552] ? __pfx_hci_le_meta_evt+0x10/0x10 [ 602.101362][T12552] ? __pfx_hci_event_packet+0x10/0x10 [ 602.101387][T12552] ? kcov_remote_start+0x18e/0x7f0 [ 602.101407][T12552] ? lockdep_hardirqs_on+0x98/0x140 ** 40 printk messages dropped ** [ 602.119488][T11292] ? get_device_parent+0x366/0x3a0 [ 602.119520][T11292] device_add+0x408/0xb80 [ 602.119544][T11292] hci_conn_add_sysfs+0xd5/0x210 [ 602.119571][T11292] le_conn_complete_evt+0xf1d/0x1420 [ 602.119599][T11292] ? __pfx_le_conn_complete_evt+0x10/0x10 [ 602.119616][T11292] ? __mutex_unlock_slowpath+0x1a1/0x730 [ 602.119645][T11292] ? __pfx___mutex_unlock_slowpath+0x10/0x10 [ 602.119669][T11292] ? skb_pull_data+0xfb/0x200 [ 602.119694][T11292] hci_le_enh_conn_complete_evt+0x189/0x4a0 [ 602.119715][T11292] ? __pfx_hci_le_enh_conn_complete_evt+0x10/0x10 [ 602.119739][T11292] hci_event_packet+0x78f/0x1260 [ 602.119765][T11292] ? __pfx_hci_le_meta_evt+0x10/0x10 ** 36 printk messages dropped ** [ 602.162172][T15152] sysfs_create_dir_ns+0x259/0x280 ** 7 printk messages dropped ** [ 602.162373][T15152] device_add+0x408/0xb80 [ 602.162396][T15152] hci_conn_add_sysfs+0xd5/0x210 [ 602.162422][T15152] le_conn_complete_evt+0xf1d/0x1420 [ 602.162451][T15152] ? __pfx_le_conn_complete_evt+0x10/0x10 [ 602.162469][T15152] ? __mutex_unlock_slowpath+0x1a1/0x730 [ 602.162499][T15152] ? __pfx___mutex_unlock_slowpath+0x10/0x10 ** 6 printk messages dropped ** [ 602.162670][T15152] ? kcov_remote_start+0x18e/0x7f0 ** 40 printk messages dropped ** [ 602.194089][T13267] ? __pfx_kobject_add+0x10/0x10 ** 1 printk messages dropped ** [ 602.194152][T13267] ? get_device_parent+0x366/0x3a0 [ 602.194176][T13267] device_add+0x408/0xb80 [ 602.194199][T13267] hci_conn_add_sysfs+0xd5/0x210 ** 1 printk messages dropped ** [ 602.194255][T13267] ? __pfx_le_conn_complete_evt+0x10/0x10 [ 602.194272][T13267] ? __mutex_unlock_slowpath+0x1a1/0x730 [ 602.194303][T13267] ? __pfx___mutex_unlock_slowpath+0x10/0x10 ** 49 printk messages dropped ** [ 602.216254][T12552] device_add+0x408/0xb80 ** 55 printk messages dropped ** [ 602.218038][T11292] ? __mutex_unlock_slowpath+0x1a1/0x730 [ 602.218068][T11292] ? __pfx___mutex_unlock_slowpath+0x10/0x10 [ 602.218095][T11292] ? skb_pull_data+0xfb/0x200 [ 602.218119][T11292] hci_le_enh_conn_complete_evt+0x189/0x4a0 [ 602.218140][T11292] ? __pfx_hci_le_enh_conn_complete_evt+0x10/0x10 [ 602.218163][T11292] hci_event_packet+0x78f/0x1260 [ 602.218190][T11292] ? __pfx_hci_le_meta_evt+0x10/0x10 [ 602.218211][T11292] ? __pfx_hci_event_packet+0x10/0x10 [ 602.218237][T11292] ? kcov_remote_start+0x18e/0x7f0 [ 602.218256][T11292] ? lockdep_hardirqs_on+0x98/0x140 [ 602.218280][T11292] ? hci_send_to_monitor+0xe2/0x590 [ 602.218311][T11292] hci_rx_work+0x3ee/0x1060 [ 602.218345][T11292] ? process_one_work+0x868/0x15a0 [ 602.218366][T11292] process_one_work+0x93a/0x15a0 [ 602.218409][T11292] ? __pfx_process_one_work+0x10/0x10 [ 602.218441][T11292] ? assign_work+0x3a1/0x410 [ 602.218468][T11292] worker_thread+0x9b0/0xee0 [ 602.218516][T11292] kthread+0x711/0x8a0 [ 602.218537][T11292] ? __pfx_worker_thread+0x10/0x10 [ 602.218560][T11292] ? __pfx_kthread+0x10/0x10 [ 602.218580][T11292] ? _raw_spin_unlock_irq+0x23/0x50 ** 36 printk messages dropped ** [ 602.240079][T15152] ? skb_pull_data+0xfb/0x200 ** 47 printk messages dropped ** [ 602.286155][T13267] kobject_add_internal+0x6ab/0xcc0 [ 602.286184][T13267] kobject_add+0x155/0x220 [ 602.286207][T13267] ? __pfx_kobject_add+0x10/0x10 [ 602.286233][T13267] ? _raw_spin_unlock+0x28/0x50 [ 602.286258][T13267] ? get_device_parent+0x366/0x3a0 [ 602.286282][T13267] device_add+0x408/0xb80 [ 602.286304][T13267] hci_conn_add_sysfs+0xd5/0x210 [ 602.286331][T13267] le_conn_complete_evt+0xf1d/0x1420 [ 602.286361][T13267] ? __pfx_le_conn_complete_evt+0x10/0x10 [ 602.286378][T13267] ? __mutex_unlock_slowpath+0x1a1/0x730 [ 602.286408][T13267] ? __pfx___mutex_unlock_slowpath+0x10/0x10 [ 602.286431][T13267] ? skb_pull_data+0xfb/0x200 [ 602.286455][T13267] hci_le_enh_conn_complete_evt+0x189/0x4a0 ** 46 printk messages dropped ** [ 602.328955][T15152] device_add+0x408/0xb80 ** 52 printk messages dropped ** [ 602.332788][T11292] device_add+0x408/0xb80 ** 1 printk messages dropped ** [ 602.332837][T11292] le_conn_complete_evt+0xf1d/0x1420 ** 1 printk messages dropped ** [ 602.332884][T11292] ? __mutex_unlock_slowpath+0x1a1/0x730 [ 602.332914][T11292] ? __pfx___mutex_unlock_slowpath+0x10/0x10 [ 602.332936][T11292] ? skb_pull_data+0xfb/0x200 [ 602.332959][T11292] hci_le_enh_conn_complete_evt+0x189/0x4a0 [ 602.332981][T11292] ? __pfx_hci_le_enh_conn_complete_evt+0x10/0x10 [ 602.333004][T11292] hci_event_packet+0x78f/0x1260 [ 602.333030][T11292] ? __pfx_hci_le_meta_evt+0x10/0x10 [ 602.333051][T11292] ? __pfx_hci_event_packet+0x10/0x10 [ 602.333077][T11292] ? kcov_remote_start+0x18e/0x7f0 [ 602.333096][T11292] ? lockdep_hardirqs_on+0x98/0x140 [ 602.333122][T11292] ? hci_send_to_monitor+0xe2/0x590 [ 602.333145][T11292] hci_rx_work+0x3ee/0x1060 [ 602.333179][T11292] ? process_one_work+0x868/0x15a0 [ 602.333200][T11292] process_one_work+0x93a/0x15a0 [ 602.333243][T11292] ? __pfx_process_one_work+0x10/0x10 [ 602.333274][T11292] ? assign_work+0x3a1/0x410 [ 602.333309][T11292] worker_thread+0x9b0/0xee0 [ 602.333356][T11292] kthread+0x711/0x8a0 [ 602.333378][T11292] ? __pfx_worker_thread+0x10/0x10 [ 602.333401][T11292] ? __pfx_kthread+0x10/0x10 [ 602.333422][T11292] ? _raw_spin_unlock_irq+0x23/0x50 [ 602.333442][T11292] ? lockdep_hardirqs_on+0x98/0x140 [ 602.333462][T11292] ? __pfx_kthread+0x10/0x10 [ 602.333481][T11292] ret_from_fork+0x599/0xb30 [ 602.333506][T11292] ? __pfx_ret_from_fork+0x10/0x10 [ 602.333542][T11292] ? __switch_to_asm+0x39/0x70 [ 602.333559][T11292] ? __switch_to_asm+0x33/0x70 ** 6 printk messages dropped ** [ 602.386733][T11292] Bluetooth: hci4: failed to register connection device ** 29 printk messages dropped ** [ 602.397415][T12552] ? __pfx_hci_le_meta_evt+0x10/0x10 [ 602.397436][T12552] ? __pfx_hci_event_packet+0x10/0x10 [ 602.397462][T12552] ? kcov_remote_start+0x18e/0x7f0 [ 602.397481][T12552] ? lockdep_hardirqs_on+0x98/0x140 [ 602.397507][T12552] ? hci_send_to_monitor+0xe2/0x590 [ 602.397530][T12552] hci_rx_work+0x3ee/0x1060 [ 602.397563][T12552] ? process_one_work+0x868/0x15a0 ** 45 printk messages dropped ** [ 602.403654][T15152] ? __pfx_hci_le_enh_conn_complete_evt+0x10/0x10 ** 2 printk messages dropped ** [ 602.403727][T15152] ? __pfx_hci_event_packet+0x10/0x10 ** 1 printk messages dropped ** [ 602.403773][T15152] ? lockdep_hardirqs_on+0x98/0x140 [ 602.403799][T15152] ? hci_send_to_monitor+0xe2/0x590 ** 9 printk messages dropped ** [ 602.404098][T15152] ? _raw_spin_unlock_irq+0x23/0x50 ** 40 printk messages dropped ** [ 602.446817][T12552] ? __pfx_hci_le_enh_conn_complete_evt+0x10/0x10 [ 602.446841][T12552] hci_event_packet+0x78f/0x1260 [ 602.446868][T12552] ? __pfx_hci_le_meta_evt+0x10/0x10 [ 602.446888][T12552] ? __pfx_hci_event_packet+0x10/0x10 [ 602.446914][T12552] ? kcov_remote_start+0x18e/0x7f0 [ 602.446933][T12552] ? lockdep_hardirqs_on+0x98/0x140 [ 602.446959][T12552] ? hci_send_to_monitor+0xe2/0x590 [ 602.446982][T12552] hci_rx_work+0x3ee/0x1060 [ 602.447015][T12552] ? process_one_work+0x868/0x15a0 [ 602.447038][T12552] process_one_work+0x93a/0x15a0 [ 602.447082][T12552] ? __pfx_process_one_work+0x10/0x10 [ 602.447113][T12552] ? assign_work+0x3a1/0x410 [ 602.447141][T12552] worker_thread+0x9b0/0xee0 [ 602.447189][T12552] kthread+0x711/0x8a0 [ 602.447210][T12552] ? __pfx_worker_thread+0x10/0x10 [ 602.447233][T12552] ? __pfx_kthread+0x10/0x10 [ 602.447254][T12552] ? _raw_spin_unlock_irq+0x23/0x50 [ 602.447274][T12552] ? lockdep_hardirqs_on+0x98/0x140 [ 602.447300][T12552] ? __pfx_kthread+0x10/0x10 [ 602.447320][T12552] ret_from_fork+0x599/0xb30 [ 602.447345][T12552] ? __pfx_ret_from_fork+0x10/0x10 [ 602.447377][T12552] ? __switch_to_asm+0x39/0x70 [ 602.447394][T12552] ? __switch_to_asm+0x33/0x70 [ 602.447410][T12552] ? __pfx_kthread+0x10/0x10 [ 602.447430][T12552] ret_from_fork_asm+0x1a/0x30 [ 602.447464][T12552] [ 602.447490][T12552] kobject: kobject_add_internal failed for hci7:0 with -EEXIST, don't try to register things with the same name in the same directory. [ 602.451150][T13267] CPU: 0 UID: 0 PID: 13267 Comm: kworker/u9:12 Not tainted syzkaller #0 PREEMPT(full) [ 602.451172][T13267] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 [ 602.451184][T13267] Workqueue: hci6 hci_rx_work [ 602.451208][T13267] Call Trace: [ 602.451216][T13267] [ 602.451224][T13267] dump_stack_lvl+0x189/0x250 [ 602.451245][T13267] ? __pfx_dump_stack_lvl+0x10/0x10 [ 602.451262][T13267] ? __pfx__printk+0x10/0x10 [ 602.451291][T13267] ? kernfs_path_from_node+0x250/0x290 [ 602.451314][T13267] ? kernfs_path_from_node+0x2f/0x290 ** 24 printk messages dropped ** [ 602.451939][T13267] ? process_one_work+0x868/0x15a0 [ 602.451960][T13267] process_one_work+0x93a/0x15a0 ** 50 printk messages dropped ** [ 602.469429][T15152] ? hci_send_to_monitor+0xe2/0x590 ** 1 printk messages dropped ** [ 602.469486][T15152] ? process_one_work+0x868/0x15a0 ** 1 printk messages dropped ** [ 602.469559][T15152] ? __pfx_process_one_work+0x10/0x10 ** 1 printk messages dropped ** [ 602.469618][T15152] worker_thread+0x9b0/0xee0 [ 602.469667][T15152] kthread+0x711/0x8a0 [ 602.469688][T15152] ? __pfx_worker_thread+0x10/0x10 ** 50 printk messages dropped ** [ 602.503323][T12552] ? __pfx_process_one_work+0x10/0x10 [ 602.503354][T12552] ? assign_work+0x3a1/0x410 [ 602.503381][T12552] worker_thread+0x9b0/0xee0 [ 602.503429][T12552] kthread+0x711/0x8a0 [ 602.503450][T12552] ? __pfx_worker_thread+0x10/0x10 [ 602.503473][T12552] ? __pfx_kthread+0x10/0x10 ** 45 printk messages dropped ** [ 602.575199][T13267] ? kcov_remote_start+0x18e/0x7f0 [ 602.575218][T13267] ? lockdep_hardirqs_on+0x98/0x140 ** 1 printk messages dropped ** [ 602.575266][T13267] hci_rx_work+0x3ee/0x1060 ** 1 printk messages dropped ** [ 602.575321][T13267] process_one_work+0x93a/0x15a0 [ 602.575365][T13267] ? __pfx_process_one_work+0x10/0x10 [ 602.575396][T13267] ? assign_work+0x3a1/0x410 [ 602.575424][T13267] worker_thread+0x9b0/0xee0 ** 49 printk messages dropped ** [ 602.686542][T12552] hci_rx_work+0x3ee/0x1060 [ 602.686577][T12552] ? process_one_work+0x868/0x15a0 [ 602.686598][T12552] process_one_work+0x93a/0x15a0 [ 602.686643][T12552] ? __pfx_process_one_work+0x10/0x10 [ 602.686674][T12552] ? assign_work+0x3a1/0x410 [ 602.686701][T12552] worker_thread+0x9b0/0xee0 ** 51 printk messages dropped ** [ 602.696177][T15152] ? assign_work+0x3a1/0x410 ** 6 printk messages dropped ** [ 602.696360][T15152] ? __pfx_kthread+0x10/0x10 [ 602.696380][T15152] ret_from_fork+0x599/0xb30 [ 602.696406][T15152] ? __pfx_ret_from_fork+0x10/0x10 ** 45 printk messages dropped ** [ 602.739790][T13267] ? process_one_work+0x868/0x15a0 ** 2 printk messages dropped ** [ 602.739886][T13267] ? assign_work+0x3a1/0x410 [ 602.739914][T13267] worker_thread+0x9b0/0xee0 [ 602.739962][T13267] kthread+0x711/0x8a0 [ 602.739983][T13267] ? __pfx_worker_thread+0x10/0x10 [ 602.740006][T13267] ? __pfx_kthread+0x10/0x10 [ 602.740026][T13267] ? _raw_spin_unlock_irq+0x23/0x50 [ 602.740047][T13267] ? lockdep_hardirqs_on+0x98/0x140 [ 602.740068][T13267] ? __pfx_kthread+0x10/0x10 [ 602.740087][T13267] ret_from_fork+0x599/0xb30 [ 602.740113][T13267] ? __pfx_ret_from_fork+0x10/0x10 [ 602.740145][T13267] ? __switch_to_asm+0x39/0x70 [ 602.740162][T13267] ? __switch_to_asm+0x33/0x70 [ 602.740178][T13267] ? __pfx_kthread+0x10/0x10 [ 602.740198][T13267] ret_from_fork_asm+0x1a/0x30 [ 602.740233][T13267] [ 602.740262][T13267] kobject: kobject_add_internal failed for hci6:0 with -EEXIST, don't try to register things with the same name in the same directory. [ 602.743348][T15152] CPU: 0 UID: 0 PID: 15152 Comm: kworker/u9:13 Not tainted syzkaller #0 PREEMPT(full) [ 602.743371][T15152] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 [ 602.743382][T15152] Workqueue: hci5 hci_rx_work [ 602.743405][T15152] Call Trace: [ 602.743412][T15152] [ 602.743420][T15152] dump_stack_lvl+0x189/0x250 ** 38 printk messages dropped ** [ 602.744408][T15152] ? __pfx_kthread+0x10/0x10 ** 50 printk messages dropped ** [ 602.766200][T13267] kthread+0x711/0x8a0 ** 1 printk messages dropped ** [ 602.766245][T13267] ? __pfx_kthread+0x10/0x10 [ 602.766265][T13267] ? _raw_spin_unlock_irq+0x23/0x50 [ 602.766291][T13267] ? lockdep_hardirqs_on+0x98/0x140 [ 602.766312][T13267] ? __pfx_kthread+0x10/0x10 [ 602.766332][T13267] ret_from_fork+0x599/0xb30 [ 602.766357][T13267] ? __pfx_ret_from_fork+0x10/0x10 [ 602.766389][T13267] ? __switch_to_asm+0x39/0x70 [ 602.766406][T13267] ? __switch_to_asm+0x33/0x70 [ 602.766423][T13267] ? __pfx_kthread+0x10/0x10 [ 602.766442][T13267] ret_from_fork_asm+0x1a/0x30 [ 602.766477][T13267] [ 602.766537][T13267] kobject: kobject_add_internal failed for hci6:0 with -EEXIST, don't try to register things with the same name in the same directory. [ 602.779717][T15152] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci5/hci5:0' [ 602.784562][T13267] Bluetooth: hci6: failed to register connection device [ 602.785065][T13267] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci6/hci6:0' [ 602.792779][T15152] CPU: 0 UID: 0 PID: 15152 Comm: kworker/u9:13 Not tainted syzkaller #0 PREEMPT(full) [ 602.792803][T15152] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 [ 602.792815][T15152] Workqueue: hci5 hci_rx_work ** 13 printk messages dropped ** [ 602.793129][T15152] ? _raw_spin_unlock+0x28/0x50 ** 24 printk messages dropped ** [ 602.793809][T15152] ? __pfx_kthread+0x10/0x10 ** 52 printk messages dropped ** [ 602.804136][T13267] ? __pfx_kthread+0x10/0x10 [ 602.804157][T13267] ? _raw_spin_unlock_irq+0x23/0x50 ** 1 printk messages dropped ** [ 602.804199][T13267] ? __pfx_kthread+0x10/0x10 [ 602.804223][T13267] ret_from_fork+0x599/0xb30 [ 602.804249][T13267] ? __pfx_ret_from_fork+0x10/0x10 [ 602.804282][T13267] ? __switch_to_asm+0x39/0x70 [ 602.804299][T13267] ? __switch_to_asm+0x33/0x70 [ 602.804315][T13267] ? __pfx_kthread+0x10/0x10 [ 602.804334][T13267] ret_from_fork_asm+0x1a/0x30 [ 602.804370][T13267] [ 602.804395][T13267] kobject: kobject_add_internal failed for hci6:0 with -EEXIST, don't try to register things with the same name in the same directory. [ 602.808018][T15152] Bluetooth: hci5: failed to register connection device [ 602.808481][T15152] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci5/hci5:0' [ 602.818443][T13267] Bluetooth: hci6: failed to register connection device [ 602.823761][T15152] CPU: 0 UID: 0 PID: 15152 Comm: kworker/u9:13 Not tainted syzkaller #0 PREEMPT(full) [ 602.823781][T15152] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 ** 8 printk messages dropped ** [ 602.823959][T15152] sysfs_create_dir_ns+0x259/0x280 ** 30 printk messages dropped ** [ 602.824778][T15152] ? __pfx_kthread+0x10/0x10 ** 1 printk messages dropped ** [ 602.824819][T15152] ? lockdep_hardirqs_on+0x98/0x140 [ 602.824840][T15152] ? __pfx_kthread+0x10/0x10 ** 51 printk messages dropped ** [ 602.848346][T13267] ? __pfx_kthread+0x10/0x10 [ 602.848366][T13267] ? _raw_spin_unlock_irq+0x23/0x50 [ 602.848387][T13267] ? lockdep_hardirqs_on+0x98/0x140 [ 602.848408][T13267] ? __pfx_kthread+0x10/0x10 [ 602.848426][T13267] ret_from_fork+0x599/0xb30 [ 602.848452][T13267] ? __pfx_ret_from_fork+0x10/0x10 [ 602.848483][T13267] ? __switch_to_asm+0x39/0x70 [ 602.848500][T13267] ? __switch_to_asm+0x33/0x70 [ 602.848516][T13267] ? __pfx_kthread+0x10/0x10 [ 602.848536][T13267] ret_from_fork_asm+0x1a/0x30 [ 602.848571][T13267] [ 602.848597][T13267] kobject: kobject_add_internal failed for hci6:0 with -EEXIST, don't try to register things with the same name in the same directory. [ 602.854801][T15152] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci5/hci5:0' [ 602.868814][T13267] Bluetooth: hci6: failed to register connection device [ 602.869263][T13267] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci6/hci6:0' [ 602.876969][T15152] CPU: 0 UID: 0 PID: 15152 Comm: kworker/u9:13 Not tainted syzkaller #0 PREEMPT(full) [ 602.876990][T15152] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 [ 602.877002][T15152] Workqueue: hci5 hci_rx_work [ 602.877030][T15152] Call Trace: [ 602.877038][T15152] [ 602.877048][T15152] dump_stack_lvl+0x189/0x250 [ 602.877071][T15152] ? __pfx_dump_stack_lvl+0x10/0x10 ** 22 printk messages dropped ** [ 602.877634][T15152] ? __pfx_hci_event_packet+0x10/0x10 ** 12 printk messages dropped ** [ 602.878008][T15152] ? _raw_spin_unlock_irq+0x23/0x50 ** 52 printk messages dropped ** [ 602.885439][T13267] ? _raw_spin_unlock_irq+0x23/0x50 ** 1 printk messages dropped ** [ 602.885481][T13267] ? __pfx_kthread+0x10/0x10 [ 602.885501][T13267] ret_from_fork+0x599/0xb30 [ 602.885525][T13267] ? __pfx_ret_from_fork+0x10/0x10 [ 602.885558][T13267] ? __switch_to_asm+0x39/0x70 [ 602.885574][T13267] ? __switch_to_asm+0x33/0x70 [ 602.885591][T13267] ? __pfx_kthread+0x10/0x10 [ 602.885610][T13267] ret_from_fork_asm+0x1a/0x30 ** 3 printk messages dropped ** [ 602.901085][T13267] Bluetooth: hci6: failed to register connection device ** 43 printk messages dropped ** [ 602.920542][T13267] ? __pfx_kthread+0x10/0x10 [ 602.920562][T13267] ? _raw_spin_unlock_irq+0x23/0x50 [ 602.920583][T13267] ? lockdep_hardirqs_on+0x98/0x140 [ 602.920603][T13267] ? __pfx_kthread+0x10/0x10 [ 602.920623][T13267] ret_from_fork+0x599/0xb30 ** 52 printk messages dropped ** [ 602.926206][T15152] ret_from_fork+0x599/0xb30 [ 602.926229][T15152] ? __pfx_ret_from_fork+0x10/0x10 ** 1 printk messages dropped ** [ 602.926279][T15152] ? __switch_to_asm+0x33/0x70 [ 602.926295][T15152] ? __pfx_kthread+0x10/0x10 [ 602.926314][T15152] ret_from_fork_asm+0x1a/0x30 [ 602.926349][T15152] [ 602.926931][T15152] kobject: kobject_add_internal failed for hci5:0 with -EEXIST, don't try to register things with the same name in the same directory. [ 602.933535][T13267] Bluetooth: hci6: failed to register connection device [ 602.941932][T15152] Bluetooth: hci5: failed to register connection device [ 602.952482][T13267] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci6/hci6:0' [ 602.955032][T15152] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci5/hci5:0' [ 602.962100][T13267] CPU: 1 UID: 0 PID: 13267 Comm: kworker/u9:12 Not tainted syzkaller #0 PREEMPT(full) [ 602.962122][T13267] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 [ 602.962135][T13267] Workqueue: hci6 hci_rx_work [ 602.962163][T13267] Call Trace: [ 602.962172][T13267] [ 602.962180][T13267] dump_stack_lvl+0x189/0x250 [ 602.962209][T13267] ? __pfx_dump_stack_lvl+0x10/0x10 [ 602.962227][T13267] ? __pfx__printk+0x10/0x10 [ 602.962257][T13267] ? kernfs_path_from_node+0x250/0x290 [ 602.962281][T13267] ? kernfs_path_from_node+0x2f/0x290 ** 33 printk messages dropped ** [ 602.963154][T13267] ? lockdep_hardirqs_on+0x98/0x140 [ 602.963175][T13267] ? __pfx_kthread+0x10/0x10 [ 602.963199][T13267] ret_from_fork+0x599/0xb30 [ 602.963225][T13267] ? __pfx_ret_from_fork+0x10/0x10 [ 602.963257][T13267] ? __switch_to_asm+0x39/0x70 [ 602.963274][T13267] ? __switch_to_asm+0x33/0x70 [ 602.963290][T13267] ? __pfx_kthread+0x10/0x10 [ 602.963309][T13267] ret_from_fork_asm+0x1a/0x30 ** 6 printk messages dropped ** [ 602.976369][T15152] ** 41 printk messages dropped ** [ 602.977427][T15152] ? __pfx_ret_from_fork+0x10/0x10 [ 602.977466][T15152] ? __switch_to_asm+0x39/0x70 ** 2 printk messages dropped ** [ 602.977519][T15152] ret_from_fork_asm+0x1a/0x30 [ 602.977554][T15152] ** 48 printk messages dropped ** [ 603.007987][T13267] ? lockdep_hardirqs_on+0x98/0x140 ** 2 printk messages dropped ** [ 603.008051][T13267] ? __pfx_ret_from_fork+0x10/0x10 [ 603.008084][T13267] ? __switch_to_asm+0x39/0x70 ** 52 printk messages dropped ** [ 603.014362][T15152] ? __switch_to_asm+0x39/0x70 [ 603.014379][T15152] ? __switch_to_asm+0x33/0x70 [ 603.014395][T15152] ? __pfx_kthread+0x10/0x10 [ 603.014415][T15152] ret_from_fork_asm+0x1a/0x30 [ 603.014455][T15152] [ 603.014480][T15152] kobject: kobject_add_internal failed for hci5:0 with -EEXIST, don't try to register things with the same name in the same directory. [ 603.036391][T13267] Bluetooth: hci6: failed to register connection device [ 603.041162][T15152] Bluetooth: hci5: failed to register connection device [ 603.045907][T13267] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci6/hci6:0' [ 603.057057][T15152] Bluetooth: hci5: command 0x2016 tx timeout [ 603.061075][T13267] CPU: 1 UID: 0 PID: 13267 Comm: kworker/u9:12 Not tainted syzkaller #0 PREEMPT(full) [ 603.061098][T13267] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 [ 603.061111][T13267] Workqueue: hci6 hci_rx_work [ 603.061137][T13267] Call Trace: [ 603.061146][T13267] [ 603.061154][T13267] dump_stack_lvl+0x189/0x250 [ 603.061183][T13267] ? __pfx_dump_stack_lvl+0x10/0x10 ** 41 printk messages dropped ** [ 603.062250][T13267] ? __switch_to_asm+0x33/0x70 ** 45 printk messages dropped ** [ 603.123998][ C1] R10: ffffc9000c9b6f00 R11: fffff52001936de6 R12: 1ffff92001936da0 ** 1 printk messages dropped ** [ 603.124024][ C1] FS: 0000000000000000(0000) GS:ffff888125b03000(0000) knlGS:0000000000000000 [ 603.124038][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 603.124049][ C1] CR2: 000000c002e9e000 CR3: 000000002fdec000 CR4: 00000000003526f0 [ 603.124064][ C1] Call Trace: [ 603.124072][ C1] [ 603.124078][ C1] sprintf+0xa4/0x120 [ 603.124100][ C1] ? __pfx_sprintf+0x10/0x10 [ 603.124115][ C1] ? prb_first_seq+0xfd/0x1a0 [ 603.124131][ C1] ? desc_read+0x208/0x3f0 [ 603.124149][ C1] info_print_prefix+0x155/0x310 [ 603.124175][ C1] ? __pfx_info_print_prefix+0x10/0x10 [ 603.124193][ C1] ? _prb_read_valid+0xa7b/0xa90 [ 603.124207][ C1] ? desc_read+0x1b8/0x3f0 [ 603.124225][ C1] record_print_text+0x154/0x420 [ 603.124244][ C1] ? __pfx__prb_read_valid+0x10/0x10 [ 603.124259][ C1] ? __pfx_record_print_text+0x10/0x10 [ 603.124278][ C1] ? panic_on_this_cpu+0x32/0x40 [ 603.124300][ C1] printk_get_next_message+0x26d/0x7b0 [ 603.124320][ C1] ? __lock_acquire+0x6b6/0x2cf0 [ 603.124339][ C1] ? __pfx_printk_get_next_message+0x10/0x10 [ 603.124363][ C1] ? console_flush_all+0x131/0xb60 [ 603.124382][ C1] ? console_flush_all+0x4bf/0xb60 [ 603.124401][ C1] console_flush_all+0x514/0xb60 [ 603.124418][ C1] ? console_flush_all+0x131/0xb60 ** 37 printk messages dropped ** [ 603.125148][ C1] ? __pfx_process_one_work+0x10/0x10 ** 53 printk messages dropped ** [ 603.187879][T15152] ? assign_work+0x3a1/0x410 ** 1 printk messages dropped ** [ 603.187954][T15152] kthread+0x711/0x8a0 ** 1 printk messages dropped ** [ 603.187999][T15152] ? __pfx_kthread+0x10/0x10 [ 603.188019][T15152] ? _raw_spin_unlock_irq+0x23/0x50 [ 603.188040][T15152] ? lockdep_hardirqs_on+0x98/0x140 [ 603.188060][T15152] ? __pfx_kthread+0x10/0x10 [ 603.188080][T15152] ret_from_fork+0x599/0xb30 [ 603.188104][T15152] ? __pfx_ret_from_fork+0x10/0x10 [ 603.188137][T15152] ? __switch_to_asm+0x39/0x70 [ 603.188153][T15152] ? __switch_to_asm+0x33/0x70 [ 603.188169][T15152] ? __pfx_kthread+0x10/0x10 [ 603.188189][T15152] ret_from_fork_asm+0x1a/0x30 [ 603.188224][T15152] [ 603.188569][T15152] kobject: kobject_add_internal failed for hci5:0 with -EEXIST, don't try to register things with the same name in the same directory. [ 603.209427][T13267] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci6/hci6:0' [ 603.216425][T15152] Bluetooth: hci5: failed to register connection device [ 603.222009][T13267] CPU: 1 UID: 0 PID: 13267 Comm: kworker/u9:12 Not tainted syzkaller #0 PREEMPT(full) [ 603.222032][T13267] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 [ 603.222044][T13267] Workqueue: hci6 hci_rx_work [ 603.222073][T13267] Call Trace: [ 603.222081][T13267] [ 603.222089][T13267] dump_stack_lvl+0x189/0x250 [ 603.222113][T13267] ? __pfx_dump_stack_lvl+0x10/0x10 [ 603.222131][T13267] ? __pfx__printk+0x10/0x10 [ 603.222168][T13267] ? kernfs_path_from_node+0x250/0x290 [ 603.222191][T13267] ? kernfs_path_from_node+0x2f/0x290 [ 603.222218][T13267] sysfs_create_dir_ns+0x259/0x280 ** 31 printk messages dropped ** [ 603.223044][T13267] ? _raw_spin_unlock_irq+0x23/0x50 ** 49 printk messages dropped ** [ 603.275488][T15152] ? assign_work+0x3a1/0x410 ** 3 printk messages dropped ** [ 603.275608][T15152] ? __pfx_kthread+0x10/0x10 ** 1 printk messages dropped ** [ 603.275650][T15152] ? lockdep_hardirqs_on+0x98/0x140 [ 603.275671][T15152] ? __pfx_kthread+0x10/0x10 [ 603.275691][T15152] ret_from_fork+0x599/0xb30 [ 603.275715][T15152] ? __pfx_ret_from_fork+0x10/0x10 [ 603.275749][T15152] ? __switch_to_asm+0x39/0x70 [ 603.275765][T15152] ? __switch_to_asm+0x33/0x70 [ 603.275782][T15152] ? __pfx_kthread+0x10/0x10 [ 603.275801][T15152] ret_from_fork_asm+0x1a/0x30 [ 603.275837][T15152] [ 603.275865][T15152] kobject: kobject_add_internal failed for hci7:0 with -EEXIST, don't try to register things with the same name in the same directory. [ 603.287237][T13267] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci6/hci6:0' [ 603.291461][T15152] Bluetooth: hci7: failed to register connection device [ 603.295959][T13267] CPU: 1 UID: 0 PID: 13267 Comm: kworker/u9:12 Not tainted syzkaller #0 PREEMPT(full) [ 603.295980][T13267] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 ** 40 printk messages dropped ** [ 603.297006][T13267] ? _raw_spin_unlock_irq+0x23/0x50 ** 48 printk messages dropped ** [ 603.482594][T15152] ? process_one_work+0x868/0x15a0 ** 1 printk messages dropped ** [ 603.482660][T15152] ? __pfx_process_one_work+0x10/0x10 [ 603.482691][T15152] ? assign_work+0x3a1/0x410 [ 603.482719][T15152] worker_thread+0x9b0/0xee0 [ 603.482767][T15152] kthread+0x711/0x8a0 [ 603.482789][T15152] ? __pfx_worker_thread+0x10/0x10 [ 603.482812][T15152] ? __pfx_kthread+0x10/0x10 [ 603.482832][T15152] ? _raw_spin_unlock_irq+0x23/0x50 [ 603.482853][T15152] ? lockdep_hardirqs_on+0x98/0x140 [ 603.482874][T15152] ? __pfx_kthread+0x10/0x10 [ 603.482894][T15152] ret_from_fork+0x599/0xb30 [ 603.482919][T15152] ? __pfx_ret_from_fork+0x10/0x10 [ 603.482951][T15152] ? __switch_to_asm+0x39/0x70 [ 603.482969][T15152] ? __switch_to_asm+0x33/0x70 [ 603.482985][T15152] ? __pfx_kthread+0x10/0x10 [ 603.483005][T15152] ret_from_fork_asm+0x1a/0x30 [ 603.483040][T15152] [ 603.483072][T15152] kobject: kobject_add_internal failed for hci5:0 with -EEXIST, don't try to register things with the same name in the same directory. [ 603.486469][T13267] CPU: 1 UID: 0 PID: 13267 Comm: kworker/u9:12 Not tainted syzkaller #0 PREEMPT(full) ** 42 printk messages dropped ** [ 603.487535][T13267] ? lockdep_hardirqs_on+0x98/0x140 ** 48 printk messages dropped ** [ 603.564942][T13267] process_one_work+0x93a/0x15a0 ** 1 printk messages dropped ** [ 603.565018][T13267] ? assign_work+0x3a1/0x410 ** 1 printk messages dropped ** [ 603.565092][T13267] kthread+0x711/0x8a0 [ 603.565114][T13267] ? __pfx_worker_thread+0x10/0x10 [ 603.565136][T13267] ? __pfx_kthread+0x10/0x10 [ 603.565156][T13267] ? _raw_spin_unlock_irq+0x23/0x50 [ 603.565177][T13267] ? lockdep_hardirqs_on+0x98/0x140 [ 603.565198][T13267] ? __pfx_kthread+0x10/0x10 [ 603.565218][T13267] ret_from_fork+0x599/0xb30 [ 603.565242][T13267] ? __pfx_ret_from_fork+0x10/0x10 [ 603.565275][T13267] ? __switch_to_asm+0x39/0x70 [ 603.565291][T13267] ? __switch_to_asm+0x33/0x70 [ 603.565308][T13267] ? __pfx_kthread+0x10/0x10 [ 603.565327][T13267] ret_from_fork_asm+0x1a/0x30 [ 603.565362][T13267] [ 603.565398][T13267] kobject: kobject_add_internal failed for hci6:0 with -EEXIST, don't try to register things with the same name in the same directory. [ 603.568337][T15152] CPU: 0 UID: 0 PID: 15152 Comm: kworker/u9:13 Not tainted syzkaller #0 PREEMPT(full) [ 603.568361][T15152] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 [ 603.568373][T15152] Workqueue: hci7 hci_rx_work [ 603.568399][T15152] Call Trace: [ 603.568406][T15152] [ 603.568414][T15152] dump_stack_lvl+0x189/0x250 [ 603.568437][T15152] ? __pfx_dump_stack_lvl+0x10/0x10 [ 603.568454][T15152] ? __pfx__printk+0x10/0x10 [ 603.568484][T15152] ? kernfs_path_from_node+0x250/0x290 [ 603.568507][T15152] ? kernfs_path_from_node+0x2f/0x290 [ 603.568533][T15152] sysfs_create_dir_ns+0x259/0x280 [ 603.568559][T15152] ? __pfx_sysfs_create_dir_ns+0x10/0x10 [ 603.568584][T15152] ? do_raw_spin_unlock+0x122/0x240 [ 603.568609][T15152] kobject_add_internal+0x6ab/0xcc0 [ 603.568636][T15152] kobject_add+0x155/0x220 [ 603.568659][T15152] ? __pfx_kobject_add+0x10/0x10 [ 603.568684][T15152] ? _raw_spin_unlock+0x28/0x50 [ 603.568710][T15152] ? get_device_parent+0x366/0x3a0 [ 603.568733][T15152] device_add+0x408/0xb80 [ 603.568756][T15152] hci_conn_add_sysfs+0xd5/0x210 ** 24 printk messages dropped ** [ 603.569409][T15152] ? __pfx_kthread+0x10/0x10 ** 50 printk messages dropped ** [ 603.691394][T13267] worker_thread+0x9b0/0xee0 [ 603.691443][T13267] kthread+0x711/0x8a0 [ 603.691465][T13267] ? __pfx_worker_thread+0x10/0x10 [ 603.691487][T13267] ? __pfx_kthread+0x10/0x10 [ 603.691508][T13267] ? _raw_spin_unlock_irq+0x23/0x50 [ 603.691529][T13267] ? lockdep_hardirqs_on+0x98/0x140 ** 51 printk messages dropped ** [ 603.698537][T15152] ? _raw_spin_unlock_irq+0x23/0x50 [ 603.698558][T15152] ? lockdep_hardirqs_on+0x98/0x140 [ 603.698579][T15152] ? __pfx_kthread+0x10/0x10 ** 1 printk messages dropped ** [ 603.698624][T15152] ? __pfx_ret_from_fork+0x10/0x10 ** 49 printk messages dropped ** [ 603.722811][T13267] ? __pfx_worker_thread+0x10/0x10 [ 603.722834][T13267] ? __pfx_kthread+0x10/0x10 [ 603.722854][T13267] ? _raw_spin_unlock_irq+0x23/0x50 [ 603.722875][T13267] ? lockdep_hardirqs_on+0x98/0x140 [ 603.722896][T13267] ? __pfx_kthread+0x10/0x10 [ 603.722916][T13267] ret_from_fork+0x599/0xb30 [ 603.722941][T13267] ? __pfx_ret_from_fork+0x10/0x10 [ 603.722973][T13267] ? __switch_to_asm+0x39/0x70 [ 603.722990][T13267] ? __switch_to_asm+0x33/0x70 [ 603.723007][T13267] ? __pfx_kthread+0x10/0x10 [ 603.723026][T13267] ret_from_fork_asm+0x1a/0x30 [ 603.723062][T13267] [ 603.723085][T13267] kobject: kobject_add_internal failed for hci6:0 with -EEXIST, don't try to register things with the same name in the same directory. [ 603.775608][T15152] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci7/hci7:0' [ 603.780097][T13267] Bluetooth: hci6: failed to register connection device [ 603.785305][T15152] CPU: 0 UID: 0 PID: 15152 Comm: kworker/u9:13 Not tainted syzkaller #0 PREEMPT(full) [ 603.785327][T15152] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 [ 603.785340][T15152] Workqueue: hci7 hci_rx_work [ 603.785368][T15152] Call Trace: [ 603.785376][T15152] [ 603.785384][T15152] dump_stack_lvl+0x189/0x250 [ 603.785407][T15152] ? __pfx_dump_stack_lvl+0x10/0x10 [ 603.785424][T15152] ? __pfx__printk+0x10/0x10 ** 32 printk messages dropped ** [ 603.786343][T15152] ? __pfx_worker_thread+0x10/0x10 [ 603.786366][T15152] ? __pfx_kthread+0x10/0x10 [ 603.786386][T15152] ? _raw_spin_unlock_irq+0x23/0x50 [ 603.786407][T15152] ? lockdep_hardirqs_on+0x98/0x140 [ 603.786428][T15152] ? __pfx_kthread+0x10/0x10 [ 603.786447][T15152] ret_from_fork+0x599/0xb30 [ 603.786472][T15152] ? __pfx_ret_from_fork+0x10/0x10 [ 603.786505][T15152] ? __switch_to_asm+0x39/0x70 [ 603.786522][T15152] ? __switch_to_asm+0x33/0x70 [ 603.786538][T15152] ? __pfx_kthread+0x10/0x10 [ 603.786557][T15152] ret_from_fork_asm+0x1a/0x30 [ 603.786592][T15152] ** 43 printk messages dropped ** [ 603.806928][T13267] ? __pfx_worker_thread+0x10/0x10 [ 603.806951][T13267] ? __pfx_kthread+0x10/0x10 [ 603.806971][T13267] ? _raw_spin_unlock_irq+0x23/0x50 [ 603.806992][T13267] ? lockdep_hardirqs_on+0x98/0x140 [ 603.807013][T13267] ? __pfx_kthread+0x10/0x10 [ 603.807033][T13267] ret_from_fork+0x599/0xb30 ** 49 printk messages dropped ** [ 603.983366][T15152] ? __pfx_worker_thread+0x10/0x10 ** 2 printk messages dropped ** [ 603.983434][T15152] ? lockdep_hardirqs_on+0x98/0x140 [ 603.983455][T15152] ? __pfx_kthread+0x10/0x10 ** 12 printk messages dropped ** [ 604.003705][T13267] Workqueue: hci6 hci_rx_work ** 37 printk messages dropped ** [ 604.004674][T13267] ? __pfx_worker_thread+0x10/0x10 [ 604.004696][T13267] ? __pfx_kthread+0x10/0x10 [ 604.004717][T13267] ? _raw_spin_unlock_irq+0x23/0x50 [ 604.004738][T13267] ? lockdep_hardirqs_on+0x98/0x140 [ 604.004759][T13267] ? __pfx_kthread+0x10/0x10 [ 604.004778][T13267] ret_from_fork+0x599/0xb30 [ 604.004803][T13267] ? __pfx_ret_from_fork+0x10/0x10 [ 604.004836][T13267] ? __switch_to_asm+0x39/0x70 [ 604.004854][T13267] ? __switch_to_asm+0x33/0x70 [ 604.004870][T13267] ? __pfx_kthread+0x10/0x10 [ 604.004889][T13267] ret_from_fork_asm+0x1a/0x30 [ 604.004925][T13267] [ 604.004956][T13267] kobject: kobject_add_internal failed for hci6:0 with -EEXIST, don't try to register things with the same name in the same directory. [ 604.011596][T15152] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci7/hci7:0' [ 604.019043][T13267] Bluetooth: hci6: failed to register connection device [ 604.027906][T15152] CPU: 0 UID: 0 PID: 15152 Comm: kworker/u9:13 Not tainted syzkaller #0 PREEMPT(full) [ 604.027929][T15152] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 [ 604.027941][T15152] Workqueue: hci7 hci_rx_work [ 604.027968][T15152] Call Trace: [ 604.027977][T15152] [ 604.027985][T15152] dump_stack_lvl+0x189/0x250 [ 604.028008][T15152] ? __pfx_dump_stack_lvl+0x10/0x10 [ 604.028026][T15152] ? __pfx__printk+0x10/0x10 ** 37 printk messages dropped ** [ 604.029004][T15152] ret_from_fork+0x599/0xb30 ** 45 printk messages dropped ** [ 604.181004][T13267] ? process_one_work+0x868/0x15a0 ** 1 printk messages dropped ** [ 604.181068][T13267] ? __pfx_process_one_work+0x10/0x10 [ 604.181099][T13267] ? assign_work+0x3a1/0x410 [ 604.181127][T13267] worker_thread+0x9b0/0xee0 [ 604.181180][T13267] kthread+0x711/0x8a0